Changes in the contents of low molecular weight carbohydrates and glycogen in fruit-bodies of tamogitake-mushroom (Pleurotus cornucopiae) during non-packaging storage and hermetical storage (polyethylene film bags in 100μm thickness) at five storage temperatures (0, 5, 10, 20 and 30°C) were investigated. (1) The shelf lives of non-packaging storage of tamogitake-mushrooms were 8-9 days at 0°C, 7days at 5°C, 6-7 days at 10°C, 3 days at 20°C and 2 days at 30°C. The shelf lives of hermetical packaging storage of tamogitake-mushrooms were 14-15 days at 0°C, 12 days at 5°C 8-9 days at 10°C, 5-6 days at 20°C and 3 days at 30°C, and hermetical packaging storage was effective to extend the shelf lives. (2) In this mushroom, mannitol, arabitol, glycerol, trehalose and glucose were identified, and mannitol and trehalose were found to be major among them. During storage, the contents of each element decreased. Especially the decrease in mannitol and trehalose were marked, which suggested that mannitol and trehalose are major respiratory substrate. (3) The contents of glycogen in fruit-bodies during storage at five storage temperatures decreased with the elapse of storage days and the rise of storage temperatures.

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Adley seeds contained 9.4% lipids and their saponification value was 180.2 and iodine value was 94.6. The ratio of neutral lipids, glycolipids (GL) and phospholipids (PL) were 99.1 : 0.2 : 0.7, respectively. Oleic acid (C18 : 1), linoleic acid (C18 : 2) and palmitic acid (C16 : 0) were the major fatty acids in the above lipids. Triacylglycerols (TG) was examined for the positional composition of fatty acids; position C-2 of TG was rich in unsaturated fatty acids. 91% of C16 : 0 in TG distributed in C-1, 3 positions. Triunsaturated and diunsaturated types were the major TG of adley seeds. Adley seeds contained 5 kinds of GL, 9 kinds of PL, where sterylglycolipids, glycero-glycolipids, were the major components of GL and phospatidyicholine was the major components of PL.

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Ethylene permeability of commercial plastic films, including three kinds of low density polyethylene films (LDPE) mixed with porous minerals (Ohya-ishi etc.), a kind of polystyrene film mixed with porous mineral, ethylene vinylacetate copolymer film (EVA) and multi layer films contained nylon, was determined at 20 and 30°C by both simple pouch method and Lyssy method, using LDPE (30μm) and LDPE (50μm) as control. Nitrogen, oxygen and carbon dioxide permeabilities of the same films were also determined by Lyssy method. Simple pouch method for ethylene was performed to measure periodically ethylene concentration in the film pouchs by gas chromatography. And then quality stability of broccoli packaged individually in the films tested was investigated during storage of one week at 20°C. Simple pouch method gave almost same level of ethylene permeability obtained by Lyssy method, indicating this method is useful and rapid. EVA, LDPE (30μm) and a kind of LDPE mixed with porous mineral had relatively high ethylene permeability. A typical LDPE mixed with porous mineral (Ohya-ishi) was almost same ethylene permeability with LDPE (50μm). The broccoli packaged in the high ethylene permeability films gave low off-flavor score and relative high overall score by sensory evaluation, comparing with other samples. From these results, the relation between ethylene permeability of commercial plastic films and quality stability of broccoli was discussed as effect of other gas permeability.

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