Study on Optimization of Preservation Conditions in Distiller's Grains for Shoots of Phyllostachys edulis
[Objective]To explore the methods for preserving the raw bamboo shoots with distiller's grains,then to determine the optimal conditions for preserving raw bamboo shoots.[Method]The study adopted L9(34)orthogonal test and principal component analysis to study the factors influencing preservation conditions for raw shoots of Phyllostachys edulis.The 4 factors adopted in the experiment were immersion time,concentration of distiller's grains,species of distiller's grains and preservation time,respectively,and there were 3 levels set for every factor.In addition,principal component analysis was carried out on six indexes of shoot quality,i.e.crude fiber,soluble sugar,crude fat,crude protein,amino acid and water content.[Result]The results showed that crude fat,crude protein and amino acid content were the main evaluation indexes,which could explain 88.08%variance.The 4 factors influencing the shoot quantity of Ph.edulis were ranked as preservation time＞immersion time＞species of distiller's grains＞concentration of distiller's grains,among which,preservation time played the decisive role in raw shoot preservation.[Conclusion]The optimal combination of all factors is A1 B3 C2 D3,that is,5 minutes of immersion time,60%concentration of distiller's grains,red distiller's grains and 20 days of preservation time.
Phyllostachys edulisPreservation of raw shootsOrthogonal testPrincipal component analysisFuzzy analysis
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