Physico-chemical and microbiological changes during storage of fresh ginseng
1981
Oh, H.I. | Noh, H.W. | Do, J.H. (Korea Ginseng and Tobacco Research Inst., Seoul (Korea R.))
Physical, chemical and microbiological changes were periodically studied during the six months storage of fresh ginseng under N2, CO2 gas or sub-atmospheric pressure conditions. The moisture contents of fresh ginseng gradually decreased during the first 2 months storage and thereafter generally reached at equilibrium. There was no significant change in reducing sugar content in 1 month storage, followed by a decrease in between 2 and 3 months storage. The total sugar content increased significantly during the first 3 months storage. Under CO2 and N2 gas storage, the total sugar content gradually decreased after 3 months storage, while no significant change was observed in the samples stored under sub-atmospheric pressure. Amylase activity gradually decreased as storage period increased. The content of saponin decreased as storage period increased, but ginsenoside Rf, Rd, Rc and Rb2 increased significantly in 1 month storage. However, growth of microorganisms was observed in the rhizome and injured areas of ginseng after 5 months storage in the N2 and CO2 gas atmosphere
显示更多 [+] 显示较少 [-]