巻号一覧
21 巻, 5 号
選択された号の論文の7件中1～7を表示しています
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その原因と診断と予防細田 達雄1968 年 21 巻 5 号 p. 187-192
発行日: 1968/05/20
公開日: 2011/06/17
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坪倉 貫三, 藤原 寿, 高井 寿文, 岩田 明敏, 岩崎 邦夫1968 年 21 巻 5 号 p. 193-194
発行日: 1968/05/20
公開日: 2011/06/17
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小川 益男, 北原 康弘, 高橋 久, 田中 博, 菅原 通夫, 近藤 貢, 小林 嗣郎, 中野 竜雄, 山田 敏雄1968 年 21 巻 5 号 p. 197-201,194
発行日: 1968/05/20
公開日: 2011/06/17
ジャーナル フリーSixty-two samples of bottled milk collected from milk plants and food stores were examined for contamination with psychrophilic and mesophilic bacteria and changes in quality during storage.
1. Of 38 samples collected from milk plants, twenty-four were contaminated with less than 30 psychrophilic organisms per sample. After storage at 5×7°C for 7 days, more than 106psychrophilic organisms were found in each of 35 samples. The situation was similar in the case of mesophilic organism situation was similar in the case of mesophilic organisms.
2. The psychrophilic-bacterial count was arranged as less than 30 (10 samples), 104, 101, 103, and 102in the decreasing order in 24 samples of commercial bottled milk. The mesophilic-bacterial count was a little lower than it.
3. Acidity was about 0.13 per cent immediately after collection. After storage at low temperature milk-plant samples still remained within the standard of acidity, but 15 samples of commercial milk failed to meet this standard. Only two of them showed coagulation.
4. Results were almost identical between the boiling and the alcohol tests. After storage at low temperature, about 70 per cent of commercial milk samples were positive for both tests.
5. Flavor was altered in almost all samples after storage at low temperature. Most samples became rancid.
6. Ability of protein decomposition was revealed by 50 and 30 per cent of the isolated psychrophilic and mesophilic bacteria, respectively, and ability of fat decomposition by 19 and 8 per cent.
7. Pseudomonas was predominant among the psychrophilic and mesophilic bacteria isolated. After storage, Pseudomonas was predominant among the psychrophilic bacteria isolated, but one of Enterobacteriaceae, Streptococcus, asporogenous Grampositive rods, and Micrococcus prevailed among the mesophilic bacteria isolated in most cases.
8. These results indicate that the contamination of bottled milk with psychrophilic bacteria cannot be neglected from the viewpoint of food sanitation.抄録全体を表示PDF形式でダウンロード (1063K) -
小川 益男, 近藤 貢, 北原 康弘, 菅原 通夫, 高橋 利弘, 池田 修, 久井 伸次, 中野 竜雄, 山田 俊雄1968 年 21 巻 5 号 p. 202-205,192
発行日: 1968/05/20
公開日: 2011/06/17
ジャーナル フリーStudies were made on the actual state of bacterial contamination at every process of bottling in milk plant A operated under theUHTsystem. It was the aim of these studies to clarify the mechanism of development of a microflora in bottled milk from the viewpoint of food hygiene and environmental sanitation.
1. The count of psychrophilic bacteria ranged from 104to 109in raw milk. It was found, however, to be zero in sampling-cock milk and surge-tank milk immediately after sampling and even after storage at 5×7°C for 7 days. Those bacteria were detected again from bottled milk, although they were very small in number. The bacterial flora in the bottled milk at the plant was similar to that in the commercial bottled milk previously reported and had thermolabile Pseudomonas organisms as its predominant members. These results indicate that the psychrophilic bacteria detected from bottled milk are derived from recontamination which may have occurred after pasteurization.
Essentially the same results were obtained from sampled milk with regard to mesophilic bacteria.
2. Psychrophilic bacteria were hardly detected from the water used in the plant, cleaned bottles, and caps. They were found, however, in every sample of the air within the plant, showing a count ranging from 101to 102. These results suggest that the machines and other factors in the plant which were not examined in the present investigation, rather than water, bottles, and caps which have been studied as possible sources of contamination, may be closely related to the mechanism of development of a psychrophilic bacterial flora in bottled milk.
Mesophilic bacteria were frequently detected from cleaned bottles and caps, though very small in number, in addition to the air within the plant. Thermophilic bacteria were found, though very small in number, the the air within the plant, but not in any other item examined.抄録全体を表示PDF形式でダウンロード (701K) -
大内 為雄, 石黒 富雄, 斉藤 昇, 井上 勇, 野本 貞夫, 渡辺 文男1968 年 21 巻 5 号 p. 206-209
発行日: 1968/05/20
公開日: 2011/06/17
ジャーナル フリー1965年6月にウズラのコクシジウム症に遭遇し, つぎのような知見を得た.
1) 臨床症状は特徴的な所見に乏しく急死する場合が多く, 剖検所見では盲腸の腫大・充出血が認められた.
2) 分離オーシストは卵円形でmicropyle, polar inclusionに欠け, 大きさは16-27×13-23μであった室温では24時間でスポロシストの形成が認められ, 再生日数は3日であった.
3) アンプロリウム0.006%およびアンプロリウム0.006%とフラゾリドン (Nf-80) 0.05%の混与による予防を行なったところ, へい死率は対照群に比べて低い成績であった. また, 治療のためアルファ剤 (パラサロン) を0.2%の割合に飼料に添加したところへい死率を激減させる効果を認めた.
4) 臓器からE. coliを純粋に分離したので, 今後細菌との関係について究明する必要を認めた.抄録全体を表示PDF形式でダウンロード (2634K) -
I基礎試験成績上野 計1968 年 21 巻 5 号 p. 210-213,209
発行日: 1968/05/20
公開日: 2011/06/17
ジャーナル フリー牛肺虫第1期子虫の検査法として遠心管内遊出法を考案し, この方法によって基礎試験を実施した. これらの結果を要約すると新鮮な直腸便39を使用し水道水を注加後, 約25℃で一昼夜保持するとほとんどの子虫は遊出し管底都に沈下する. この検査法を遠心管2本について実施すればほぼ正確に子虫の存在とその数を検査することができ, 従来のこの種の検査法に比し, 術式は極めて簡易であることがわかった.抄録全体を表示PDF形式でダウンロード (2747K) -
農林省家畜衛生試験場1968 年 21 巻 5 号 p. 214-216
発行日: 1968/05/20
公開日: 2011/06/17
ジャーナル フリーPDF形式でダウンロード (545K)
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