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以冬虫夏草菌体量为指标,研究了培养基中不同成分对虫草生长的影响,利用Plackett-Burman(PB)试验设计筛选出影响虫草菌生长的关键培养基成分,然后利用最陡爬坡试验和中心组合设计试验优化和确立最佳培养基配方,结果表明,葡萄糖、酵母粉和KH2PO4对虫草的生长有显著影响,优化后的培养基成分为葡萄糖59.35g/L、KH2PO4 1.47g/L、酵母浸粉16.83g/L、蛋白胨10g/L、MgSO4·7H2O0.1g/L.利用此培养基获得的虫草菌体量为26.86g/L,是优化前的2.5倍,为虫草工业化生产提供参考. 相似文献
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冬虫夏草菌丝体的深层培养 总被引:1,自引:0,他引:1
陆幼兰 《广州食品工业科技》2003,19(4):12-15
本文研究了冬虫夏草的深层培养的培养基、培养条件、工艺流程及所需的设备,并比较了天然冬虫夏草与此方法培养的菌丝成份。采用深层培养虫草菌丝体能大批量生产虫草菌丝体,其分离出的物质有效成份与天然冬虫夏草的成份相同,二者的药理、药效极其相似,能保证筛选用药的物质来源,缓解虫草资源的紧张状况。 相似文献
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该研究采用传统培养分离法从大曲、酒醅等原料中分离筛选能以葡萄糖为底物产香兰素的芽孢杆菌,并通过分子生物学技术对其进行鉴定。利用该菌株发酵冬虫夏草,并以香兰素含量为评价指标,采用单因素试验及响应面试验对其发酵工艺进行优化。结果表明,分离筛选得到一株香兰素产量较高的菌株B4-9,经鉴定,为枯草芽孢杆菌(Bacillus subtilis),其发酵冬虫夏草的最佳工艺参数为料液比1∶30、装液量20%、pH 7、接种量10%、培养温度43℃、摇床转速200 r/min,发酵时间9 d,在此条件下,冬虫夏草发酵液中香兰素含量可达到4.6 mg/L。 相似文献
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根据对白砂糖、柠檬酸的阈值测定结果,研究了以虫草和茶叶为原料的饮料的风味。正交试验结果表明:以茶汤50ml、虫草浸提液22.5ml的添加量,配制的虫草茶饮料风味最佳。 相似文献
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人工培养的兰坪虫草子实体中核苷类成分研究 总被引:3,自引:0,他引:3
兰坪虫草(Ophiocordyceps lanpingensis)产于我国滇西北地区,是一种寄生在钩蝠蛾幼虫上的虫生真菌。本文以四种不同培养基培养的兰坪虫草子实体为原料,采用高效液相色谱法(HPLC)同时检测10种核苷类成分(尿嘧啶、尿苷、2'-脱氧尿苷、肌苷、鸟苷、腺嘌呤、胸腺、腺苷、2'-脱氧腺苷、虫草素),并将其与野生冬虫夏草(Ophiocordyceps sinensis)、野生兰坪虫草进行对比分析,初步评估人工培养兰坪虫草子实体的质量。结果表明,以大米和蚕蛹粉为主要原料的培养基所培养的兰坪虫草子实体生长时间平均为40 d,周期短于其他三种培养方式;且其腺苷、总核苷含量分别为2744μg/g和8015μg/g,明显高于野生冬虫夏草、野生兰坪虫草,有较好的质量水平。因此,人工培养的兰坪虫草子实体具有重要的研究价值和应用潜力。 相似文献
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人工牛肉大理石花纹的生产研究性状 总被引:3,自引:3,他引:3
由于人类追求牛肉胴体高瘦肉率导致大理石花纹等级低下以及高脂肪会引起健康方面的问题,开发研制脂肪代用品合成人工牛肉大理石花纹就越来越受到人类的关注.本文主要介绍了人工牛肉大理石花纹的生成研究性状,以期能为其它类健康食品的开发提供思路. 相似文献
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综述了目前研究白酒酿造微生物主要采取的培养分离技术手段及其优缺点,提出了白酒酿造中难培养微生物可供借鉴的培养分离新方法,以期拓展白酒微生物领域研究的深度和广度,提升白酒品质,促进白酒产业升级。 相似文献
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Rosane S. Cavalcante Helder L. S. Lima Gustavo A. S. Pinto Carlos A. T. Gava Sueli Rodrigues 《Food and Bioprocess Technology》2008,1(1):100-104
In the present work, the use of low-cost substrates to produce Trichoderma spores was evaluated. Rice, corn bran, and wheat bran were used as solid substrate to grow Trichoderma harzanium sp., Trichoderma viride sp., Trichoderma koningii sp., and Trichoderma polysporum sp. No external nutrient sources were added to the solid substrate that was only moisturized with deonized water, sterilized,
inoculated, and cultivated at 30 °C for 7 days. Wheat bran showed to be the most suitable substrate to produce Trichoderma spores for all strains that were evaluated. High spore counts were obtained for T. harzianum sp. (28.30 × 108/gds) and T. viride sp. (24.10 × 108 spores/gds). 相似文献
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SUMMARY— Conidia of Aspergillus flavors were exposed to the gamma radiation of Cobalt-60 and to 1 Mev electrons generated in a resonance transformer accelerator. When the spores were irradiated in water there was a linear relationship between radiation dose and logarithmic survival of the spores, with a D value equal to 38 Krad for both the gamma rays and the electrons. In the absence of surrounding water the resistance of the spores to radiation was higher than in the presence of water and the dose-survival curve was not linear. There was no appreciable pH effect in the range of 3 to 7 on the radiation resistance of the spores. When the spores were irradiated in dextrose solution a small increase in their radiation resistance was observed as the sugar concentration was raised from 0 to 40%. 相似文献