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International Journal of Medicinal Mushrooms
Factor de Impacto: 1.423 Factor de Impacto de 5 años: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Imprimir: 1521-9437
ISSN En Línea: 1940-4344

Volumes:
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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018029002
pages 47-57

Developing a Novel Two-Stage Process for Carotenoid Production by Cordyceps militaris (Ascomycetes)

Qianwang Zheng
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
Tao Wei
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
Yin Lin
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China
Zhiwei Ye
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, Guangdong, China
Jun-fang Lin
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, Guangdong, China
Li-qiong Guo
Institute of Food Biotechnology and College of Food Science, South China Agricultural University, Guangzhou, Guangdong, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
Fan Yun
Guangzhou Alchemy Biotechnology Co., Ltd, Guangzhou, Guangdong, China
Linzhi Kang
Guangzhou Alchemy Biotechnology Co., Ltd, Guangzhou, Guangdong, China

SINOPSIS

Natural carotenoids are attracting increasing interest, but their widespread use is limited because of poor production. Cordyceps militaris, a traditional Chinese mushroom, contains a large amount of carotenoids, and this study aimed to increase carotenoid production by C. militaris by optimizing a liquid-state cultivation system. We developed and optimized a novel 2-stage process, including cultivation under shaking in darkness and under static irradiation on a flat panel, using response surface methodology, and we compared this process to common shake-flask cultivation. In addition, we examined the effects of different inducers (chitosan, peanut oil, tomato juice, yeast, and metal ions) on carotenoid production. Results showed that under optimal conditions (4 days of shaking in darkness, 10 days of static irradiation with a 100-mL flat panel volume), a maximum of 1217.5 ± 115.9 μg/g carotenoids were produced; only 662.9 μg/g were produced by common shake-flask cultivation. Only a large amount of chitosan (8 mg) could significantly increase carotenoid content; some of the other inducers showed inhibitory effects. This study demonstrated that this 2-stage process could effectively increase the natural carotenoid content in C. militaris, making it a potential source for commercial exploitation.


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