Water-soluble non-starch polysaccharides of wild-simulated Dendrobium catenatum Lindley plantings on rocks and bark of pear trees

Jingjing Liu; Ya Li; Yanyun Chen; Dun Si; Xinfeng Zhang; Shihua Wu; Lei Zhang; Jinping Si

doi:10.1016/j.fochx.2022.100309

Water-soluble non-starch polysaccharides of wild-simulated Dendrobium catenatum Lindley plantings on rocks and bark of pear trees

Food Chem X. 2022 Apr 15:14:100309. doi: 10.1016/j.fochx.2022.100309. eCollection 2022 Jun 30.

Authors

Jingjing Liu¹, Ya Li¹, Yanyun Chen¹, Dun Si¹, Xinfeng Zhang¹, Shihua Wu², Lei Zhang^{1

3

4}, Jinping Si¹

Affiliations

¹ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China.
² Joint Research Centre for Engineering Biology, Zhejiang University-University of Edinburgh Institute, Zhejiang University, Haining 314400, China.
³ Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
⁴ Biomedical Innovation R&D Center, School of Medicine, Shanghai University, Shanghai 200444, China.

Abstract

The total water-soluble polysaccharide (TP) of Dendrobium catenatum is composed of starch and active non-starch polysaccharides (NSPs) with glucomannan as the main structural type. Although the TP content has been used as a quality assessment indicator for many years, the NSPs content in samples from different environments and growth seasons have not been reported. In this study, we found that NSPs had stronger antioxidant activity than TP. The NSPs content was higher in wild-simulated environments including rocks and trees compared to plantings grown in greenhouse. The culture mode and growth period affected the ratio of NSPs and starch. Facility cultivation provided optimal growth conditions but produced more starch, whereas wild-simulated cultivation resulted in a higher ratio of NSPs, particularly in September. Therefore, cultivation by lithophytation and epiphytation may be preferable to facility plantings, which is expected to be enormously useful for the current production and quality control of D. catenatum.

Keywords: Cultivation pattern; Dendrobium catenatum; Epiphytation; Glucomannan; Lithophytation; Non-starch polysaccharides.