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International Journal of Medicinal Mushrooms

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ISSN Druckformat: 1521-9437

ISSN Online: 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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Preparation of Wood Ear Mushroom, Auricularia auricula-judae (Agaricomycetes), Polysaccharides by Neutral Protease and Their Antioxidant Stress Capacity

Volumen 23, Ausgabe 5, 2021, pp. 41-53
DOI: 10.1615/IntJMedMushrooms.2021038136
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ABSTRAKT

Response surface methodology with a Box-Behnken design was used to investigate the effects of a neutral protease on Auricularia auricula-judae polysaccharide (AAP) extraction yield. Four ethanol concentrations (30%, 50%, 70%, and 90%) were used to grade AAPs. Optimal fractions with a high polysaccharide recovery rate and a strong free radical scavenging rate were obtained, and their antioxidant stress effect was studied using Caenorhabditis elegans as the model organism. The results showed that among the factors affecting AAP yield (temperature, liquid-to-A. auricula-judae powder, enzyme usage, time, pH, etc.), temperature, ratio of liquid-to-A. auricula-judae powder, and time had the most obvious effects. AAP yield reached 13.91% ± 0.95% at a temperature of 7°C, liquid-to-material ratio of 75 mL/g, and extraction time of 70 min. High AAP recovery rates and strong free radical scavenging rates of 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt and 1,1-dibenzoyl-2-trinitrophenylhydrazine were obtained by 30% ethanol (AAPs1). Results from the anti-hydrogen peroxide and methyl viologen stress experiment showed that AAPsl could significantly prolong the life of worms under oxidative stress compared to the negative control group (P < 0.05).

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