Effect of environmental factors on the polysaccharide content of Dendrobium officinale

Abstract

Dendrobium officinale is a traditional Chinese medicine and nourishing food in China. Polysaccharide content was used as a criterion for evaluating the quality of D. officinale. At present, epiphytic cultivation is the main cultivation method of D. officinale in China. In the present study, D. officinale was collected under various growing conditions to compare its polysaccharide content in an attempt to discover the most favorable growing conditions for D. officinale, which can be used to guide the artificial cultivation production of D. officinale.

Effects of Different Drying Methods on the Quality of Bletilla striata Scented Tea

“…6. It can be seen that the volatile components of Bletilla striata scented tea treated by different drying methods are different to some extent, and Bletilla striata scented tea is different from other scented tea in that its hydrocarbon compounds account for a high proportion of the total volatile components, from 19.97 μg/g~39.95 μg/g, and it is found that the mass fraction of hydrocarbon components is generally high after steam fixation, which may be due to the high mass fraction of polysaccharides in Bletilla striata flowers, and the high temperature process of steam fixation promotes the decomposition of polysaccharides and aliphatic hydrocarbons to produce more small molecular hydrocarbons [ 11 , 12 ], but it has little contribution to the aroma of Bletilla striata scented tea on the whole because the threshold of alkanes is very high.…”

Comparative analysis of the secondary metabolites of Dendrobium officinale from different growing origins by UPLC-Q/TOF-MS

“…All D. officinale samples were harvested from the Good Agricultural Practices (GAP) bases located in Zhejiang and Guizhou Province of China in 2019 as described previously (Tan et al, 2023a) (Table S1). All samples were authenticated by Associate Professor Daopeng Tan (pharmacognosy, Zunyi medical university).…”

“…Among them, polysaccharides was selected as the quality control marker for D. officinale in the Chinese Pharmacopoeia (Ch.P., 2020 edition) (Chinese Pharmacopoeia Commission, 2020). In our previous studies, it was found that the polysaccharide content of D. officinale could be affected by its growing origins (Tan et al, 2020(Tan et al, , 2023aZeng et al, 2020). To the best of our knowledge, whether the secondary metabolites other than polysaccharides are similarly different in D. officinale from different origins has not been reported.…”