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Comparison of pinoresinol diglucoside production by Phomopsis sp. XP ‐8 in different media and the characterisation and product profiles of the cultivation in mung bean
Author(s) -
Zhang Yan,
Shi Junling,
Gao Zhenhong,
Che Jinxin,
Shao Dongyan,
Liu Yanlin
Publication year - 2016
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7593
Subject(s) - pinoresinol , food science , phomopsis , phenylpropanoid , fermentation , chemistry , horticulture , mung bean , botany , biology , biosynthesis , lignan , biochemistry , enzyme
BACKGROUND Phomopsis sp. XP ‐8 is an endophytic fungus with the ability to produce pinoresinol diglucoside ( PDG ) in vitro and thus has potential application in biosynthesis of PDG independent of plants. In order to enhance the production of PDG , 18 different natural materials were tested in solid‐state cultivation of Phomopsis sp. XP ‐8. RESULTS Most of the tested natural materials promoted the production of PDG . A supplement derived from mung beans produced the highest PDG yield and better fungal growth than the other materials. Also, pinoresinol monoglucoside, pinoresinol and other substrates (phenylalanine, p ‐coumaric acid, cinnamic acid, caffeic acid, and ferulic acid) were obtained after fermentation on mung beans. Furthermore, PDG production was much higher when mung beans were incorporated into solid state agar versus a liquid medium. The highest pinoresinol diglucoside production (72.1 mg kg −1 in fresh culture) was obtained in 9 days using a solid state culture of Phomopsis sp. XP ‐8 on a mung bean grain medium containing 100 g kg −1 glucose. Mung bean water‐soluble polysaccharide was identified as a major promoter of PDG production by Phomopsis sp. XP ‐8. CONCLUSION Mung bean, especially its water‐soluble polysaccharide fraction, was an efficient natural material to promote PDG production by Phomopsis sp. XP ‐8. © 2015 Society of Chemical Industry