Studies on the Biological Characteristics of Termitomyces Albuminosus Hypha

2013 ◽  
Vol 709 ◽  
pp. 810-813 ◽  
Author(s):  
Xiong Ya ◽  
Min Jie Li
Keyword(s):  
Growth Factors ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Biological Characteristics ◽  
Edible Fungi ◽  
Growth Environment ◽  
Wild Edible Fungi ◽  
Development And Utilization

Termitomyces albuminosus is a kind of local distinctive wild edible fungi in southwest of China. It is delicious, rich in nutrition and has high development and utilization value, but owing to the restrictions of growth environment, it can not be cultivated artificially. This article mainly studied on the biological characteristics of Termitomyces albuminosus Hypha, and found out the optimal carbon source, nitrogen source, growth factors and the C/N ratio that are suitable for the growth of Hypha of Termitomyces albuminosus .

Biological Aspects of Termitomyces albuminosus Strain PXT-1 Isolated from Panzhihua

2011 ◽  
Vol 183-185 ◽  
pp. 151-154 ◽  
Author(s):  
Ya Xiong ◽  
Qiang Chen ◽  
Qian Ming Huang ◽  
Min Jie Li
Keyword(s):  
Growth Factors ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Pure Culture ◽  
Fruit Body ◽  
Biological Properties ◽  
Edible Fungi ◽  
Wild Edible Fungi ◽  
Biological Aspects

Termitomyces albuminosus is one of the famous wild edible fungi in south part of China. The fruit body is delicious, rich in nutrition, and so, it has high exploitable potential. However, due to the mycelia of Termitomyces albuminosus must grow at termitarium, it can not be cultivated artificially. In this paper, we mainly focus on isolation of Termitomyces albuminosus pure culture, and studying on its biological properties, and found out the optimal carbon source, nitrogen source, growth factors and the C/N ratio that was suitable for the growth of mycelium of Termitomyces albuminosus.

scholarly journals Monomethylamine as a Nitrogen Source for a Nonmethylotrophic Bacterium, Agrobacterium tumefaciens

2010 ◽  
Vol 76 (12) ◽  
pp. 4102-4104 ◽  
Author(s):  
Yin Chen ◽  
Kathryn L. McAleer ◽  
J. Colin Murrell
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Sole Nitrogen Source ◽  
Key Enzymes ◽  
Genes Encoding

ABSTRACT Monomethylamine can be used by nonmethylotrophs as a sole nitrogen source but not as a carbon source; however, little is known about the genes and enzymes involved. The γ-glutamylmethylamide/N-methylglutamate pathway for monomethylamine utilization by methylotrophs has recently been resolved. We have identified genes encoding key enzymes of this pathway in nonmethylotrophs (e.g., Agrobacterium tumefaciens) and demonstrated that this pathway is also involved in the utilization of monomethylamine as a nitrogen source by nonmethylotrophs.

scholarly journals Mutants affecting histidine utilization inAspergillus nidulans

1975 ◽  
Vol 25 (2) ◽  
pp. 119-135 ◽  
Author(s):  
Meryl Polkinghorne ◽  
M. J. Hynes
Keyword(s):  
Carbon Source ◽  
Nitrogen Source ◽  
Sole Carbon Source ◽  
Nitrogen Sources ◽  
Limiting Factor ◽  
Sole Nitrogen Source ◽  
Wild Type ◽  
Exogenous Substrate ◽  
Growth Properties ◽  
Type Strains

SUMMARYWild-type strains ofAspergillus nidulansgrow poorly onL-histidine as a sole nitrogen source. The synthesis of the enzyme histidase (EC. 4.3.1.3) appears to be a limiting factor in the growth of the wild type, as strains carrying the mutantareA102 allele have elevated histidase levels and grow strongly on histidine as a sole nitrogen source.L-Histidine is an extremely weak sole carbon source for all strains.Ammonium repression has an important role in the regulation of histidase synthesis and the relief of ammonium repression is dependent on the availability of a good carbon source. The level of histidase synthesis does not respond to the addition of exogenous substrate.Mutants carrying lesions in thesarA orsarB loci (suppressor ofareA102) have been isolated. The growth properties of these mutants on histidine as a sole nitrogen source correlate with the levels of histidase synthesized. Mutation at thesarA andsarB loci also reduces the utilization of a number of other nitrogen sources. The data suggest that these two genes may code for regulatory products involved in nitrogen catabolism. No histidase structural gene mutants were identified and possible explanations of this are discussed.

scholarly journals Production of Feruloyl Esterase from Aspergillus niger by Solid-State Fermentation on Different Carbon Sources

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Shiyi Ou ◽  
Jing Zhang ◽  
Yong Wang ◽  
Ning Zhang
Keyword(s):  
Carbon Source ◽  
Nitrogen Source ◽  
Wheat Bran ◽  
Cell Walls ◽  
Carbon Sources ◽  
Feruloyl Esterase ◽  
Plant Cell Walls ◽  
Optimal Conditions ◽  
Carbon And Nitrogen ◽  
Maize Bran

A mixture of wheat bran with maize bran as a carbon source and addition of (NH4)SO4 as nitrogen source was found to significantly increase production of feruloyl esterase (FAE) enzyme compared with wheat bran as a sole carbon and nitrogen source. The optimal conditions in conical flasks were carbon source (30 g) to water 1 : 1, maize bran to wheat bran 1 : 2, (NH4)SO4 1.2 g and MgSO4 70 mg. Under these conditions, FAE activity was 7.68 mU/g. The FAE activity on the mixed carbon sources showed, high activity against the plant cell walls contained in the cultures.

scholarly journals KAJIAN PENGARUH PENINGKATAN KONSENTRASI EKSTRAK KHAMIR PADA MEDIA HESTRIN DAN SCHRAMM TERHADAP PEROLEHAN SELULOSA OLEH Acetobacter liquefaciens SRC-4

2014 ◽  
Vol 5 (2) ◽  
Author(s):  
Ermina Sari
Keyword(s):  
Carbon Source ◽  
Nitrogen Source ◽  
Vitamin B1 ◽  
Vitamin B2 ◽  
Static Culture

SRC-4 starin is one of bacteria sellulose producing strains. It was obtained from the rottencoconut meat from Semplak, Bogor. The objective of this study is to obtain the optimumcomposition of modified HS medium to produce cellulose, by increasing yeast extractconcentration and also combination of carbon and vitamin sources. The production of celluloseby SRC-4 was done by 18 treatments on static culture. The increasing of yeast extractconcentration, combination of carbon and vitamin sources gave significant effect to theproduction of cellulose. The highest yield of cellulose was produced at the treatment consist of1.0 % yeat extract (as nitrogen source), 1 % glucose + 1 % glycerol (as carbon source) and0.164 ppm vitamin B1 + 0.020 ppm vitamin B2 (as vitamin source).

INVESTIGATION OF HOMOLOGOUS SERIES AS PRECURSORY HYDROCARBONS FOR ALIGNED CARBON NANOTUBE FORMATION BY THE SPRAY PYROLYSIS METHOD

NANO ◽  
2011 ◽  
Vol 06 (03) ◽  
pp. 205-213 ◽  
Author(s):  
ZHI YANG ◽  
HUAGUI NIE ◽  
XUEMEI ZHOU ◽  
ZHEN YAO ◽  
SHAOMING HUANG ◽  
...  
Keyword(s):  
Carbon Source ◽  
Thermodynamic Properties ◽  
Homologous Series ◽  
Large Scale ◽  
Carbon Sources ◽  
Formation Enthalpy ◽  
Diameter Distribution ◽  
High Yield ◽  
Spray Pyrolysis Method ◽  
Growth Environment

The precursory carbon source is one of the key parameters which govern the formation of carbon nanotubes (CNTs). In this work, by selecting four homologous series, namely n-pentane, n-hexane, n-heptane and n-octane, as investigated targets, we comparatively study the relationship between thermodynamic properties of the precursory carbon source and formation of aligned CNTs. We find that all of these alkanes are favored for the growth of aligned CNTs in a suitable growth environment. But only n-heptane can yield the aligned CNTs with relatively high quality, high yield and narrow diameter distribution. Furthermore, after considering the link between thermodynamic properties of the precursory carbon source and the morphology characteristic of the nanotube samples, we find that the Gibbs free energy and formation enthalpy of precursory carbon sources play critical roles in the nanotube formation. In additions some possible explanations are proposed to better understand these phenomena. These rules will be very helpful in making clearer the formation mechanism from the precursory carbon sources to the CNTs, and preparing large-scale aligned CNTs with diameter control at low cost.

Nitrogen-doped carbon dot mediated fluorescence on–off assay for highly sensitive detection of I− and Br− ions

2018 ◽  
Vol 42 (17) ◽  
pp. 14332-14339 ◽  
Author(s):  
Nan Zhou ◽  
Xingwei Zhang ◽  
Yanping Shi ◽  
Zeliang Li ◽  
Zhibiao Feng
Keyword(s):  
Quantum Dots ◽  
Citric Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Carbon Quantum Dots ◽  
Sensitive Detection ◽  
Nitrogen Doped ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon quantum dots (CDs) were synthesized in ethanol media by using citric acid (CA) as the carbon source and ethanediamine (EDA) as the nitrogen source.

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