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57 巻, 11 号
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三宅 博哉1991 年 57 巻 11 号 p. 1991-1995
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe population structure of walleye pollock Theragra chalcogramma in the Japan Sea coast of Hokkaido was examined on the basis of multivariate analysis of commercial catches from the four main fishing grounds during 1970 to 1988. The cluster analysis showed two clusters of this species in this area, and the multifactor analysis showed two independent factors on both sides of the Shakotan peninsula.
On the basis of the previous analysis on the number of vertebrae data during 1950 and 1973 and the results obtained in this paper, we propose that there were two populations of this species in this area.抄録全体を表示PDF形式でダウンロード (365K) -
Mustahal, 山崎 繁久, 平田 八郎1991 年 57 巻 11 号 p. 1997-2000
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to know the physiological adaptation of the rotifer, salinity adaptability of five strains of the rotifer Brachionus plicatilis, namely, YL, YS, MS, JS, and IL was observed under different salinities of 5, 15, 25, 35, and 45%.
The number of offspring was used as an indicator of rotifer production rate and was observed on cultures acclimated to each salinity for 0, 15, 35, 55, and 75 days. The index of adaptation was deduced from the slope of the linear regression equation obtained by plotting data on the number of offspring vs. acclimation periods.
The YL and YS strains showed high adaptability to all salinities, showing a highly euryhaline characteristic. MS exhibited high tolerance to low salinity with high production rate. However, at high salinities, the tolerance was low with low production rate inspite of acclimation for 75 days. JS and IL were both more euryhaline than MS, but not as euryhaline as YL and YS.抄録全体を表示PDF形式でダウンロード (243K) -
瀬川 進1991 年 57 巻 11 号 p. 2001-2006
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーOxygen consumption and ammonia excretion were investigated during a long term starvation in an abalone Sulculus diversicolor aquatilis. Abalone used in the present study were 14 specimens ranged from 0.14 to 17.10g in wet weight of soft body (W, g). They were kept starved in a closed aquarium at 24°C. Oxygen consumption and ammonia excretion rates were measured by individual in a closed bottle with several days interval until death by starvation. Oxygen consumption rate (R, μl O2/ind./h) of the abalone increased linearly with an increase in W and decreased with the period of starvation (T, days); R=92.019 W0.914 0.987T. Ammonia excretion rate (E, μmol/ind./h) increased linearly with an increase in W. Until the 17th day from commencement of the experiment E increased with an extention in T, however, it decreased with extention of T after the 17th day and they are expressed as E=0.369 W0.78 T0.413 and E=2.151 W1.012 T-0.454, respectively. The O/N ratios for abalones just after feeding were relatively high and indicate an apparent dependence upon carbohydrates in the feeding period. After about 2 weeks starvation, the O/N ratios showed relatively low and constant, followed by standard protein energy utilization thereafter.抄録全体を表示PDF形式でダウンロード (521K) -
中村 好和, 桜井 泰憲1991 年 57 巻 11 号 p. 2007-2011
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to validate daily growth increments in statoliths of Japanese common squid Todarodes pacificus, squid were reared for 67 days and fed twice with saury fillets which were immersed in tetracycline HCl (TC) solution. The interval between the first and second oral administrations of TC was 35 days. Two fluorescent marks with TC were observed in the ground and polished statoliths under UV light. The mean number of growth increments between two marks with TC was 34.9(n=17, SD=1.2). This number corresponded with the number of days elapsed (35 days) between two TC administrations. It was concluded from this result that growth increments in the statoliths of T. pacificus were formed daily.抄録全体を表示PDF形式でダウンロード (1742K) -
塚本 勝巳1991 年 57 巻 11 号 p. 2013-2022
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーAyu larvae, amphidromous salmononidei fish with a 1 year life span, were aged with otolith daily ring in order to reveal the ecological aspects of their downstream migration from the spawning ground.
The age of larvae ranged from 0 to 12d, body length from 4.6 to 8.8mm and sagittal otolith diameter from 20.5 to 48.0μm. Mean age of larvae collected in the Nagara, Kiso and Tone River was 4.5, 1.8 and 4.0d, respectively, and mean body length was 7.2, 6.8 and 6.9mm. Age, body length and otolith diameter had tendency to increase in the lower reaches of the rivers, whereas yolk volume decreased towards rivermouth.
Age, otolith diameter and yolk volume did not differ significantly between two samples collected up and down of a dam near the rivermouth of the Tone River, although body length was larger in the downstream, 7.4mm, than in the upperstream, 6.9mm. The fish density was about 4 times higher at the upperstream of the dam than at the downstream, suggesting that the drifting larvae were pooled in the dam.抄録全体を表示PDF形式でダウンロード (1523K) -
富永 修, 梨田 一也, 前田 辰昭, 高橋 豊美, 加藤 和範1991 年 57 巻 11 号 p. 2023-2031
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーSeasonal changes in gonadosomatic index, hepatosomatic index, condition factor, and stomach content index of samples collected by experimental trawls from November 1981 to February 1985 were examined to clarify the annual life cycle and distribution of adult Pleuro-nectes herzensteini in the coastal waters of northern Niigata Prefecture. In addition, 1, 126 tagged fish were released in the autumn of 1984.
Adult fish were concentrated in the offshore area at a depth of more than 130 m from August to December. From January to February, they migrated toward the inshore area (50-90 m) from Niigata Prefecture to Toyama Prefecture as gonads developed and they spawned between February and May. Migration toward the offshore area occurred chiefly after June. Feeding intensity expressed as stomach content index increased after the spawning season and decreased after August-September when hepatosomatic index and condition factor attained a peak in the seasonal cycle.
From these results, the annual life pattern of adult P. herzensteini is roughly divided into the following four periods; spawning migration (January-February), spawning (February-May), active feeding and feediing migration (May-July), and inactive feeding (August-December).抄録全体を表示PDF形式でダウンロード (539K) -
朱 勇, 古川 清, 会田 勝美1991 年 57 巻 11 号 p. 2033-2037
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to record the daily spawning time of individual fish, one female and two male tobinu-meri-dragonet were reared in separate indoor tanks (1×2×0.8 m) from September 30. The photo-period in each tank was regulated by a timer and water temperature was maintained at 22-24°C during the experiment and the spawning time was determined by checking the existence of spawned eggs on the net placed at the overflow outlet of each tank every 15 minutes.
In experiment 1, two females continued daily spawning. Spawning occurred during 1700-1900 hr when the fish were kept under a photophase of 0500-1900h (14L10D). When the photo-phase was shifted from 0500-1900h to 0100-1500h (14L10D), the spawning time was advanced by an average of 3.2 hours. Thereafter, we delayed the time of lights-on by 4 hours (10L14D); how-ever, spawning time was delayed only 0.7 hours. By delaying the time of lights-off by 4 hours (14L10D), spawning time was delayed 2.6 hours. In experiment 2, four females continued daily spawning. When the time of lights-off was advanced 4 hours (10L14D), spawning time advanced 3.1 hours. These results indicate that the spawning time is determined photoperiodically. The time of lights-off seems more significant than that of lights-on in the regulation of spawning time, indicating that “lights-off” is working as a synchronizer.抄録全体を表示PDF形式でダウンロード (365K) -
傅 恩波, 梨本 勝昭, 山本 勝太郎, 平石 智徳1991 年 57 巻 11 号 p. 2039-2043
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーTo know the drag coefficient and the added mass coefficient of plane nets in wave and water flow, the fluid force action on the plane nets were measured in a large fluid dynamical towing tank, the drag and added mass coefficients were calculated. The main results were as follows:
The drag coefficients and the added mass coefficients were derived from the wave and water flow which coexisted simultaneously. The relation between the drag coefficient and Reynolds number is shown along the same curve which were obtained in wave only and water flow only. The relation between added mass coefficient and KC number is also expressed along the same curve in wave only. In case of wave and water flow, the KC number becomes large, and so the mass force cannot be disregarded when calculating the fluid force acting on plane nets in wave and water flow that coexist simultaneously.抄録全体を表示PDF形式でダウンロード (319K) -
東 照雄1991 年 57 巻 11 号 p. 2045-2050
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーDiurnal variations in the salmon catch were investigated by gillnet operations at different times of the day during the summers of 1987 and 1988 in the Bering Sea. Of sockeye Oncorhynchus nerka, chum O. keta and pink salmon O. gorbuscha caught in large numbers, sockeye and pink salmon did not show significant variations in the diurnal catch, while chum salmon exhibited a high significant difference in the diurnal catch difference at different times of the day with the maximum catch at night. The mean CPUEs of chum and pink salmon caught in the nighttime were 1.8 and 1.1 times, respectively, greater than those in the daytime, whereas sockeye were caught less aboundantly (0.7 times) in the daytime than in the nighttime. Of 7 surveys conducted, the maximum catches of two species occurred at the same time in 4 cases, while no synchronized maximum catches of the three species were observed concomitantly.抄録全体を表示PDF形式でダウンロード (378K) -
松村 一弘, 藤田 伸二, 宮嶋 克己, 山下 成治1991 年 57 巻 11 号 p. 2051-2057
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーA new apparatus has been developed to improve the operational safety and eliminate the labour needed for trimming the vertical location of the main line used in forced scallop cultivation hanging facilities. The apparatus could be used instead of the present manner of adding floats to compensate for the lack of buoyancy caused by the growth of scallops. The apparatus is composed of a compressed air supplier on board, a rubber hose and a soft shell type float (air bag) with an open mouth on the bottom and within the characteristic air valve.
By remote controlling the air volume in the air bag with the air supplier on board, the main line can surface or relocate to designated depths. As expected the system's function and durability proved gratifying during the trials in the water tank and the cultivation nursery.抄録全体を表示PDF形式でダウンロード (475K) -
菊池 弘太郎, 武田 重信, 本田 晴朗, 清野 通康1991 年 57 巻 11 号 p. 2059-2064
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーMeasurements of the rate of nitrogen excretion were carried out with fed and starved Japanese flounder of 163 to 575g in body weight at 20°C. Ammonia-N and urea-N excretion of the starved fish were 0.20±0.05mg-N/100g/h and 0.04±0.02mg-N/100g/h, respectively. Immediately after feeding, the rate of ammonia-N excretion per hour of the flounder became 3 to 4 times that of the starved fish. These elevated rates continued for 12, 30 and more than 36h, at 0.5, 1.0 and 1.5% rations, respectively. In contrast to ammonia-N excretion, the rate of urea-N excretion per hour of the fed fish showed a major peak during the period of 6-12 or 12-24h after feeding.
In Japanese flounder fed on the pelleted diet containing 7.5% of nitrogen at average ration of 0.5%, it is estimated that 32% of the consumed nitrogen was excreted as ammonia-N, about 5% as urea-N and 8% as faeces-N within 24h after feeding.抄録全体を表示PDF形式でダウンロード (466K) -
谷口 和也, 蔵多 一哉, 鈴木 稔1991 年 57 巻 11 号 p. 2065-2071
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーFor the purpose of clarifying the reason why the laminariaceous brown alga Ecklonia stolonifera are not grazed by marine herbivorous animals, such as abalones and sea urchins, feeding-deterrent effect of the methanol extract from this alga was tested on the abalone Haliotis discus hannai by the bioassay with cellulose plate method. Concurrently, another two laminariaceous algae Eisenia bicyclis and Ecklonipopsis radicosa were examined. A large amount of the water-soluble fraction was obtained from the methanol extract of Eck. stolonifera showed potent feeding-deterrent activity when compared with those from the other two species. The active compounds that were isolated from the water-soluble fraction by a combination of column (Sephadex LH-20) and thin-layer (silica gel) chromatography, were characterized as phloroglucinol oligomers and polymers, phlorotannins, on the basis of spectroscopic analysis. The feeding-deterrent activity of phlorotannins depends upon the degree of polymerization of phloroglucinol (the polarity of the polyphenol). We concluded that the algal phlorotannins play an important role in the chemical defense against marine herbivores.抄録全体を表示PDF形式でダウンロード (1142K) -
仁科 淳良1991 年 57 巻 11 号 p. 2073-2076
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーTo evaluate the antioxidant effects of tocopherol (Toc), butyl hydroxyanisole (BHA), and L-ascorbic acid (AsA), the model system of boiled and dried sardine and salted and dried sardine, the possibility of precisely adding antioxidants and to quantitatively measure the rate of oxidation, were devised. It was determined that the antioxidant effects of Toc and BHA were almost the same for the boiled and dried sardine model system as well as for the salted and dried sardine model system. AsA showed an antioxidant effect similar to Toc and BHA on the boiled and dried sardine model system. However, AsA showed no antioxidant effect on the salted and dried sardine model system. On the other hand, the oxidation of the boiled and dried sardine model system was initiated by catalase, glutathione peroxidase, and superoxide dismutase.抄録全体を表示PDF形式でダウンロード (259K) -
安斎 寛, 浅田 浩朗, 小柴 章嗣, 吉田 諭史, 小林 秀仁, 内田 直行, 西出 英一1991 年 57 巻 11 号 p. 2077-2081
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe gastric teeth and midgut gland of a marine gastropod Dolabella auricularia were investigated with respect to the distribution of polysaccharide saccharification activities and glycosidase activities. Crude enzymes from both organs were obtained by extraction with a buffer (pH 7.5) containing 0.5M NaCl and their activities were measured for twelve kinds of polysaccharides and seven kinds of PNP-glycosides.
The total enzyme activities (Units/organ) for saccharification of soluble starch, CM-cellulose, alginic acid, β-1, 4-mannan, and β-1, 3-glucan were found to be relatively high in both organs. The specific activities (Units/mg protein) of these enzymes in the gastric teeth exhibited two-to eightfold of those in the midgut gland.
As for glycosidases, their activities were mainly distributed in the midgut gland, when compared to the gastric teeth in which only β-glucosidase, β-mannosidase, and α-glucosidase activities were detected.抄録全体を表示PDF形式でダウンロード (340K) -
原田 勝彦1991 年 57 巻 11 号 p. 2083-2088
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe attraction activities of herbal crude drugs were statistically estimated on the basis of exploratory behavior of three aquatic test animals; the black abalone Haliotis discus, the oriental weatherfish Misgurnus anguillicaudatus, and the yellowtail Seriola quinqueradiata.
Among twenty-three herbal crude drugs, the common attractive drugs for all test animals were following three drugs; Herba plectranthi (En'meisou in Japanese) and Phellodendron bark (Ohbaku) of bitter stomachic, and sweet Hydrangea leaf (Amacha) of corrective. The most potent attractive drugs were Amomum seed (Shukusha) of fragrant and pungent stomachic for abalone, guarana seed (Garana) of cardiac stimulant for oriental weatherfish, and Gentian (Genchana) of bitter stomachic for yellowtail. The attraction activity of each of these drugs increased appreciably with the increase in concentration (0.1-3.0%) for oriental weatherfish and yellowtail, but decreased at high concentrations for abalone.抄録全体を表示PDF形式でダウンロード (402K) -
佐伯 宏樹, 平田 史生, 松川 雅仁, 北ノ間 邦夫, 野中 道夫1991 年 57 巻 11 号 p. 2089-2094
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーLive sardines were chilled in ice-water for 1h or 8h, and frozen with liquid N2 (S1(L), S8(L)), followed by storing at -80°C or -20°C for 30 days. A new foodstuff known as highly nutritional fish meat (HNFM) was prepared from the frozen sardines. In this study, changes of gel-forming ability and myofibrillar Ca-ATPase activity of HNFM were investigated with respect to the frozen storage condition of the material.
The gel-forming ability and Ca-ATPase activity of HNFM prepared from S1(L) were slightly changed during -80°C storage. During -20°C storage, they kept to be fairly. On the other hand, those of HNFM prepared from S8(L) decreased during the frozen storage. A particulary marked decrease in the values of two parameters was observed in HNFM from S8(L)stored at -20°C.
These results suggest that, to manufacture HNFM possessing excellent gel-forming ability from frozen sardines, it is important to freeze extremely flesh fish rapidly and to store at lower temperature.抄録全体を表示PDF形式でダウンロード (439K) -
阿部 宏喜, 大熊 恵美子1991 年 57 巻 11 号 p. 2095-2100
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーEffects of the acclimation temperatures of carp between 5 and 30°C were examined on rigor-mortis progress and the postmortem changes of ATP and related compounds, glycogen, and lactate during storage at 0 and 10°C.
The acclimation temperature gave large effects on both period required for reaching a maximal rigor and rigor strength. Rigor-mortis proceeded faster with increasing the difference between acclimation and storage temperatures. Rigor-mortis attained its maximum at 72h for 0 and 5°C-difference, while at 56, 32, and 24h for 10, 20, and 30°C-difference, respectively. For carp given 30°C temperature difference, maximal rigor index was almost 100%, while only below 60% for 0 and 5°C-difference.
After transfer of carp to 30°C from 14°C, it took 4 weeks to change the rigor-mortis progress to a typical 30°C pattern. These data suggest that protein or lipid biosyntheses are involved in the changes of rigor-mortis patterns during temperature acclimation of carp.
During the postmortem storage, changes of several compounds, i.e., ATP and glycogen de-crease and lactate accumulation, were faster for warm-acclimated carp than cold-acclimated one. These differences are considered to be derived from the differences of ATP consumption rates be-tween warm and cold-acclimated carp.抄録全体を表示PDF形式でダウンロード (396K) -
阿部 宏喜, 大熊 恵美子1991 年 57 巻 11 号 p. 2101-2107
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーEffects of temperature were examined on the buffering capacities of L-histidine and related compounds and of fish and whale muscles.
Buffering capacities of inorganic phosphate, carnosine, and anserine in the pH range of 6.5-7.5 were high and relatively insensitive to changes in temperature within the range from 5 to 40°C. Histidine and balenine, however, represented rather low buffering capacities and large decreases in the capacity with increasing temperature. Several other non-physiological histidine containing dipeptides such as L-alanyl-L-histidine and L-seryl-L-histidine also showed high capacities and no temperature dependence.
White muscle of skipjack tuna containing large amounts of histidine and anserine showed the highest muscle buffering capacity, followed by little-piked whale muscle containing high balenine. The buffering of these muscles represented a rather large temperature dependence above 20°C. Buffering capacities of several other fish muscles containing little amounts of histidine related dipeptides were low and showed almost no temperature dependence.抄録全体を表示PDF形式でダウンロード (539K) -
神谷 久男, 村本 光二, 後藤 利奈1991 年 57 巻 11 号 p. 2109-2113
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe hemolymph of the marine snail Tugali gigas contains a potent hemolysin. Hemolysin was a protein in nature, and was heat-labile. Hemolytic activity was dependent on the presence of calcium ions. It was sensitive to the treatment with 2-mercaptoethanol or trypsin. Freezing the hemolymph also destroyed the hemolytic activity. The sugars such as D-mannosamine, N-acetyl-D-mannosamine, and also mucin Type II depressed the hemolytic activity of the hemolymph. Zymosan or sphingomyelin did not absorb the hemolysin in the T. gigas hemolymph. No cyto-toxicity against marine tumor cells nor the growth inhibition against a marine bacterium were observed.抄録全体を表示PDF形式でダウンロード (341K) -
石松 惇, 土山 高史, 吉田 誠, 鮫島 守, Mark Pawluk, 小田 達也1991 年 57 巻 11 号 p. 2115-2120
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe effect of Chattonella exposure on the acid-base status of the yellowtail Seriola quinque-radiata was analyzed to assess the validity of the hypothesized mechanism of fish kill by this plank-ton species. Based on the finding that gill carbonic anhydrase was inactivated in fish exposed to Chattonella, it was hypothesized that this inactivation resulted in certain physiological disorders such as decreases in blood pH and Po2. None of the acid-base variables measured in this study (arterial blood pH (pHe), red blood cell intracellular pH (pHi), Pco2 (Paco2), and total CO2 of plasma (Taco2p)) varied substantially from their control values after the onset of exposure except for some increases in pHi. It was only the terminal blood samples that demonstrated sharp de-creases in pHe and pHi and elevation of Paco2. In contrast, arterial Po2 decreased rapidly after the onset of plankton exposure. Overall these results do not support the above hypothesis.抄録全体を表示PDF形式でダウンロード (410K) -
松本 美鈴, 山中 英明1991 年 57 巻 11 号 p. 2121-2126
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe progress of rigor-mortis was followed together with ATP and arginine phosphate degradations and lactate accumulation during storage at 10, 5, 0, and -3°C of kuruma prawn decapitated and deshelled. The angle (D°) between caudal muscle and horizontal position of kuruma prawn on the table was used as a parameter of rigor tension. D° was 0° immediately after death and reached a maximum of 55° at a full-rigor state.
Kuruma prawn set on rigor-mortis after 3 h, irrespective of storage temperatures. However, the progress of rigor-mortis was slower at 10 and 5° than at 0 and-3°C. According to the progress of rigor-mortis, arginine phosphate and ATP decreased, while lactate accumulated. At a full-rigor state, arginine phosphate disappeared and lactate content reached a maximum level. It seemed that lactate accumulation in the muscle correlated well with the progress of rigor-mortis. On the other hand, ATP was constant during the early storage and then it decreased gradually. When ATP disappeared, the muscle showed the stage of rigor resolution.It was noted that the disappearance of arginine phosphate preceded that of ATP. This relationbetween arginine phosphate and ATP in kuruma prawn was similar to the relation between creative phosphate and ATP in fish.抄録全体を表示PDF形式でダウンロード (967K) -
辻坊 裕, 吉田 征生, 今田 千秋, 岡見 吉郎, 宮本 勝城, 稲森 善彦1991 年 57 巻 11 号 p. 2127-2131
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーA marine bacterium which produced an extracellular chitinase was isolated and identified. Out of 946 isolates from Aburatsubo Inlet, Sagami Bay and Otsuchi Bay, 95 were found to produce chitinases. We selected strain O-7 for further studies which was isolated from sediment sample at Sagami Bay at the depth of 5m, and showed a very high chitinase productivity. The strain O-7 was an aerobic, polarly flagellated, gram-negative, and rod-shaped organism with a low G+C contents (43.5mol%). The strain required seawater salts (0.8-7.0%) for the growth, indicating that this isolate is a marine strain. From the taxonomical characteristics, strain O-7 was identified as Alteromonas sp. Chitin was essential to produce chitinase as an inducer, and the optimum concentration of colloidal chitin for chitinase production was 0.5% (w/v).抄録全体を表示PDF形式でダウンロード (970K) -
畑江 敬子, 徳田 仁美, 島田 淳子, 松本 美鈴, 山中 英明1991 年 57 巻 11 号 p. 2133-2137
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーCutting open ventral side of kuruma prawn meat, we prepared “arai” samples by washing in water at 0°C for 2min, at 18°C for 2min, and at 49°C for 20s, respectively. “Arai” sample by washing at 49°C was preferable in flavor and had a strong sweetness and umami compared with the other samples. In the preference of the texture, however, there was no significant difference, and all of the samples were judged to be preferrable by the sensory panel members.
Amounts of IMP and AMP were higher in the sample prepared by washing at 49°C than in the others. The amount of free amino acids did not differ much among three samples. The levels of the supernatant after centrifugation of the samples were higher in the sample prepared at 49°C. These findings suggest that the sample prepared at 49°C releases the extract mostly, consequently, the taste can be detected among three samples when we masticate.
Eight items of physical properties were measured and followed by statistical analysis of principal component analysis. The physical properties of three kinds of “arai” were shown in the two dimentional surface. The sample prepared at 49°C located separately from the others.抄録全体を表示PDF形式でダウンロード (361K) -
坂田 泰造, 安本 洋之1991 年 57 巻 11 号 p. 2139-2143
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーA selected strain of Saprospira sp., SS90-1, produced specific plaques on a lawn of Chaetoceros ceratosporum grown on ESS agar plate. The addition of nitrogenous organic compounds in-cluded in polypeptone or yeast extract to ESS agar repressed the plaque formation and promoted the colony formation of an organism with or without host diatom. The organism was shown to synthesize saproxanthin as a major pigment and have optimal and maximum temperatures of growth at 26°C and around 31°C, respectively as grown in ZE-CI medium. The strain SS90-1 should be identified as Saprospira 'toviformis', judging from morphological and physiological characteristics.抄録全体を表示PDF形式でダウンロード (1783K) -
今野 久仁彦1991 年 57 巻 11 号 p. 2145-2149
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーThe effect of Ca2+ and EDTA on the thermal inactivation rate (KD) of squid mantle muscle myofibrils (Mf) ATPase was investigated, and squid Mf was found to be remarkably stabilized (roughly 100 times) in the presence of Ca2+ compared with in the presence of EDTA. The KD value of squid Mf was also affected by KCl concentration present, and increase in KCl from 0.1 M to 0.7 M enhanced the inactivation 500 fold. Therefore, it was concluded that squid myosin was stabilized significantly by actin in the presence of Ca2+ at a low-salt medium.
It was also found that stabilizing effect of sorbitol was independent on the presence of Ca2+, and functioned additionally if both were present together.抄録全体を表示PDF形式でダウンロード (320K) -
奥谷 康一, Suda Tandavanitj1991 年 57 巻 11 号 p. 2151-2156
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーA marine strain of Pseudomonas (HA-318) produces a polysaccharide with a rare component, fucosamine. The polysaccharide was extracted with 1% phenol solution and purified by addition of ethanol followed by precipitation with Cetavlon and DEAE-cellulose column chromatography. This polysaccharide preparation, which was homogeneous in both ultracentrifugal and electro-phoretic analyses, was composed of galacturonic acid, galactose, fucosamine, and pyruvate in the molar ratios of 3:1:1:1, together with N-acetyl groups.抄録全体を表示PDF形式でダウンロード (1848K) -
北村 章二, 尾形 博, 小野里 坦1991 年 57 巻 11 号 p. 2157
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (142K) -
林 賢治1991 年 57 巻 11 号 p. 2159
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (109K) -
塚正 泰之, 志水 寛1991 年 57 巻 11 号 p. 2161
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (828K) -
山下 倫明, 小長谷 史郎1991 年 57 巻 11 号 p. 2163
発行日: 1991/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (1111K)
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