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The effects of some amino acids on growth and lipid production in Inonotus obliquus grown in vitro

✍ Scribed by K. Kahlos

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
750 KB
Volume
14
Category
Article
ISSN
0138-4988

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✦ Synopsis

Abstract

The effect of the distribution of free and esterified fatty acids, including triterpenes and sterols, on the mycelial growth of the basidiomycete Inonotus obliquus (Pers. ex Fr.) Pilat in malt extract and solid supplemented mineral media was investigated. The amino acids DL‐alanine. DL‐aspartic acid, L‐glutamic acid, L‐leucine, L‐methionine, and L‐serine were added to the cultures at nitrogen concentrations of 0.1, 0.5 and 0.9 g/l, respectively. Differences in the average mycelial growth were distinct at concentrations of 0.5 g/l and 0.9 g/l. L‐Methionine had the highest inhibitory effect on growth. At all concentrations, the amino acids reduced the production of lanosterol. The other identified triterpenes were inotodiol, 3β,hydroxy‐lanosta‐8,24‐dien‐21‐al, 3β,21‐dihydroxy‐lanosta‐8,24‐diene, trametenolic acid, and ergosterol peroxide. The main fatty acids were either C 16:0 or C 18:2 both free or in glycerides.

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