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国际药用蘑菇期刊

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ISSN 打印: 1521-9437

ISSN 在线: 1940-4344

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00066 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.34 SJR: 0.274 SNIP: 0.41 CiteScore™:: 2.8 H-Index: 37

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Submerged Culture Conditions for the Production of Exo- and Endo-Polysaccharides by Ganoderma applanatum (Pers.) Pat.

卷 7, 册 3, 2005, 370 pages
DOI: 10.1615/IntJMedMushrooms.v7.i3.250
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摘要

Ganoderma applanatum is a perennial mushroom (Basidiomycetes) which causes white rot in broad-leaved trees. The fruit body has been used as a traditional anticancer medicine in China and is reported to have various beneficial physiological activities such as antitumor, antivirus, and immunostimulating activities. These biological activities are known to be associated with polysaccharides, and protein-bound polysaccharides were isolated from the fruiting bodies and mycelium.
Submerged cultures of edible fungi obviously have the potential for higher mycelial production or for inducing mass production of useful substances in compact space in a short time period with easy environmental control. The aim of this investigation was to determine the optimal polysaccharide production conditions from G. applanatum in submerged culture. In order to produce the immunostimulating water-soluble polysaccharides from the mycelium, the effects of several cultivating factors on polysaccharide production were studied. We were especially interested in the factors affecting the relationship between exo- and endo-polysaccharide production.
Carbon sources, carbon concentrations, culture temperature, and culture period influenced mostly the production of polysaccharides. The effective carbon sources for polysaccharide production were maltose, lactose, and glucose. High yield of the exopolysaccharide required higher temperatures (25 °C), higher carbon concentrations (60 g/L), and shorter culture periods (8−12 days). In contrast, endopolysaccharide production required lower culture temperatures (10−15 °C), lower levels of carbon (20 g/L), and a minimum of a 10-day culture period. G. applanatum accumulated endo-polysaccharides in their bodies at lower temperature conditions. Meanwhile, more exo-polysaccharides were produced at moderate temperatures and in the stationary growth phases. Under optimal culture conditions, the yield of water-soluble endopolysaccharides and exopolysaccharides reached 4 g/L and 2 g/L, respectively. The sugar compositions and chemical characteristics of the polysaccharides were also studied.

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