Abstract:
Objective The temporal variations of appearance, nutrition and eating quality of Phyllostachys prominens shoots at different harvest time were analyzed aiming at providing reference for the cultivation and production of high quality bamboo shoots.
Method The appearance quality, nutrient quality and eating quality of bamboo shoots harvested at different times (1 day, 2 days and 3 days after unearthed and unearthed) were investigated.
Result The harvest time significantly affected the length, weight, and the contents of fat, vitamin C, isoleucine, leucine, lysine and lignose, tannin, oxalic acid, total flavone in bamboo shoots (P < 0.05), but less affected the content of protein, soluble sugar, starch, sucrose, and cellulose (P>0.05), and no significant difference was found in the content of other amino acids, essential amino acids, total amino acid, flavored amino acids and the proportion of essential amino acids, flavored amino acids in bamboo shoots harvested at different time too(P>0.05).
Conclusion It is suggested that there are obvious temporal variation in the appearance quality and eating quality of Phyllostachys prominens shoots after unearthed, the main influential components of eating quality are lignose, tannin, oxalic acid, total flavone, the effect of harvest time on flavor amino acids is small. Nutritional quality changed to some extents. Therefore, from the viewpoint of high quality bamboo shoot production, bamboo shoots within 1 day after unearthed should be harvested in time.
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