Study on possibility of inorganic nitrogen utilization in Amauroderma elmerianum by labeling method with stable isotope 15N
- Author:
Tham Xuan Le
- Publication Type:Journal Article
- Keywords:
Traditional medicine
- MeSH:
Inorganic Chemicals;
Nitrogen;
Isotope Labeling
- From:Pharmaceutical Journal
1999;274(2):20-22
- CountryViet Nam
- Language:Vietnamese
-
Abstract:
The Black mannentake Amauroderma elmerianum Murr. has been newly found and cultivated in §µ L¹t, ViÖt Nam on mixed substrates, supplemented with inorganic nitrogen (ammonium sulfate), traced with 15N (4% excess). The efficiency of utilization of inorganic N fertilizer is determined about 70%, while organic N derived form various components in substrates (branch and bean powder) is only 7%. The amount of N in inorganic fertilizer added is less than 15% of total N amount in the substrates. The application of N fertilizer in combination with organic components, rich in N in substrates for cultivation of Lingzhi fungi as a material medica with improved quality has been discussed, based on using newly suggested 15N tracer techniques
