外源硝酸镧对冬虫夏草活性物质含量及抗氧化活性的影响

IF 1.4 4区 生物学 Q4 MYCOLOGY International journal of medicinal mushrooms Pub Date : 2023-01-01 DOI:10.1615/IntJMedMushrooms.2023048203
Qi Gao, Debin Zhang, Wenjing Ding, Wenjiao Zhai, Chunmei Gu, Shaofen Guo
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引用次数: 0

摘要

蛹虫草是一种药用菌。研究人员经常在培养基中添加外源物质来增加军蛹草的活性物质含量。然而,土元素对军草中活性物质含量及其抗氧化作用的影响尚未见报道。本研究采用高效液相色谱法和紫外分光光度法测定硝酸镧处理的军蛾中活性物质的含量,并进一步探讨硝酸镧喷涂对军蛾抗氧化能力的影响。结果表明,在实验浓度范围内,10 mg/L和50 mg/L两种浓度对军草活性物质含量影响显著。硝酸镧浓度为10 mg/L时,促进了戊他汀和虫草素的合成。当硝酸镧浓度为50 mg/L时,显著促进了虫草素的合成,且在该浓度下处理的蛹虫草的铁还原能力和DPPH·清除率显著高于对照组。硝酸镧对麦角甾醇合成无显著影响(P > 0.05)。最后,考虑到军蛾体内镧的残留量和50 mg/L硝酸镧处理后的军蛾体内镧的残留量在人体允许日摄入量4.2 mg以内,硝酸镧处理后的军蛾最佳浓度为50 mg/L。
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Effects of Exogenous Lanthanum Nitrate on the Active Substance Content and Antioxidant Activity of Caterpillar Medicinal Mushroom Cordyceps militaris (Ascomycetes).

Cordyceps militaris is a medicinal and edible mushroom. Researchers often add exogenous substances to the culture medium to increase the active substance content in C. militaris. However, the effect of earth elements on the active substance content in C. militaris and its antioxidant effects have not been reported. In this study, the active substance content in C. militaris treated with lanthanum nitrate was determined using high-performance liquid chromatography and ultraviolet spectrophotometry, and the effect on the antioxidant capacity of C. militaris after lanthanum nitrate spraying was further explored. The results showed that, in the experimental concentration range, the two concentrations of 10 mg/L and 50 mg/L had a significant influence on the active substance content of C. militaris. When the concentration of lanthanum nitrate was 10 mg/L, the synthesis of pentostatin and cordycepin was promoted. When the concentration of lanthanum nitrate was 50 mg/L, it significantly promoted the synthesis of cordycepin, and the ferric-reducing power and DPPH· scavenging rate of C. militaris treated at this concentration were significantly higher than those of the control group. However, lanthanum nitrate had no significant effect on ergosterol synthesis (P > 0.05). Finally, considering that the residual amount of lanthanum in C. militaris and the residual amount of lanthanum in 50 mg/L lanthanum nitrate-treated C. militaris is within the allowable daily intake of 4.2 mg for humans, the optimal concentration of lanthanum nitrate-treated C. militaris is 50 mg/L.

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来源期刊
CiteScore
2.60
自引率
16.70%
发文量
91
审稿时长
6-12 weeks
期刊介绍: The rapid growth of interest in medicinal mushrooms research is matched by the large number of disparate groups that currently publish in a wide range of publications. The International Journal of Medicinal Mushrooms is the one source of information that will draw together all aspects of this exciting and expanding field - a source that will keep you up to date with the latest issues and practice. The International Journal of Medicinal Mushrooms published original research articles and critical reviews on a broad range of subjects pertaining to medicinal mushrooms, including systematics, nomenclature, taxonomy, morphology, medicinal value, biotechnology, and much more.
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