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131.
Pleurotus ostreatus strains obtained by interbreeding were cultivated under warm conditions (27 °C), with the aim to identify germoplasm adequate to commercial production. Based on the radial growth rate of monokaryotic mycelia isolated from two P. ostreatus strains, a culture isolate was selected from each type of compatibility, and interbred to obtain 16 strains. Pasteurized barley straw was used as the substrate for mushroom production. The mean biological efficiency of the strains was 84.17% and the production rate was 1.76%. In vitro laccase activity was tested for both parental strains and the four most productive strains of progeny. The mean enzyme activity of the strains was 1.21 μg mol/disc/ABTS oxidized. These results show the high potential of these strains for their use in substrate delignification and the production of basidiocarps under natural environmental conditions of warm regions. 相似文献
132.
Renato G. Reyes Fumio Eguchi Tomoaki Iijima Miyato Higaki 《Journal of Wood Science》1998,44(5):408-413
The nutritional and physical requirements for the efficient mycelial colonization ofVolvariella volvacea (Bull. ex. Fr.). Singer were elucidated with the percentage mycelial colonization and density as references. This investigation was limited to the evaluation of two commercial strains (designated Vvc1 and Vvc2) and two wild strains (designated EAAC-0001 and EAAC-0002) ofV. volvacea from the Philippines with the aim of providing baseline data on their physiological requirements. The four strains ofV. volvacea had varying preferences for carbon. Vve1 preferred polysaccharides (starch and cellulose), whereas Vvc2 grew luxuriantly at a relatively rapid rate in sugar alcohol (sorbitol). The two wild strains preferred starch as a carbon source. In terms of nitrogen utilization, soytone, peptone, and glycine supported efficient mycelial colonization of the four strains. The vitamin utilization test revealed that ascorbic acid, calcium pantothenate, and biotin are good sources. The mycelial growth performances of the strains were also evaluated on six dehydrated mycological media. Efficient colonization of Vvc1, Vvc2, and EAAC-0002 with dense mycelial growth was noted in mycological agar. EAAC-0001, on the other hand, grew more efficiently in malt extract agar. The Philippine strains ofV. volvacea grew luxuriantly when incubated at 35°C and pH 8.0 under dark and sealed conditions. Moreover, the relatively higher moisture content (70%) of the oolong tea leaf formulation favorably stimulated efficient mycelial colonization. Under optimum physiological conditions, Vvc1, Vvc2, and EAAC-0002 were fast-growing strains, whereas EAAC-0001 was a moderately growing type. 相似文献
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134.
红枣汁对小鼠高血脂症的影响 总被引:12,自引:0,他引:12
研究了红枣汁对正常小鼠及高脂饲料致高血脂症小鼠血脂水平的影响,结果表明红枣汁对后者的高血脂症有显著的改善作用,可降低高血脂症小鼠的血清总胆固醇、血清甘油三酯、血清低密度脂蛋白,对于预防动脉粥样硬化有一定作用。 相似文献
136.
以芦笋复合汁为原料,利用果酒酵母2.185、2.374和香槟酵母2.28为发酵菌种,采用瓶中二次发酵的方法探索出芦笋复合香槟的最适发酵条件。结果显示,菌种2.185、2.374、2.28生长发育的最佳温度分别为25℃、25℃、27℃,最适pH值分别为5.5、6.0和4.0;菌种在SO2浓度150mg/kg以下时能较好地生长。 相似文献
137.
考虑到云芝的特性及食用性,提出了从云芝培养到加工成浑浊汁的新方法。云芳的生产采用悬浮培养法,较春栽培法生产周期大大缩短。制成的浑浊汁成品质量稳定,酸爽柔和,营养丰富,具有云芝独特的风味和药理保健作用。 相似文献
138.
研究了鲜榨果汁后浑浊因素的临界值,最终确定的质量浓度临界值为:蛋白质558mg·L(-1),铁60mg·L(-1),淀粉2.5mg·L(-1),单宁酸180mg·L(-1)。实验中采用模拟货架寿命的方法,得到了在40℃下保存6周可以达到室温下保存1a的效果。 相似文献
139.
140.