:Part IV. Effect of harvest season on shelf life, sugar and phenol contents and polyphenol oxidase activity of Shii-take (Lentinus edodes (Berk.) Sing.)

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With Shii-take (Lentinus edodes (Berk.) Sing) harvested in the different seasons throughout a year, shelf life, CO2 production, contents of sugars and phenolic compounds, and polyphenol oxidase (PPO) activities were investigated. Shii-take harvested in summer showed a poorer shelf life, a higher CO2 productions and a lower contents of arabitol when compared with that produced in other seasons. Polyphenol contents and PPO activities of shii-take at harvest did not directly corelate the length of storage periods. In study on the comparison of shelf life among three strain types, it was thought that an important effective factor concerning shelf life was moisture content of shii-take. It would be necessary for keeping freshness that ones have to produce the shii-take which contains moisture below 90%.
日本食品保蔵科学会の論文