硒营养强化对香菇营养品质影响研究

Effects of selenium nutrition enhancement on the nutritional quality of Lentinus edodes

中文关键词:  富硒香菇  氨基酸  蛋白质  矿质元素  营养品质

英文关键词:selenium-rich Lentinus edodes  amino acid  protein  mineral element  nutritional quality

中文摘要:

      目的 考察硒营养强化剂添加量与香菇营养品质之间的关系。方法 以‘向阳二号’和‘9608’品种香菇为研究对象, 向栽培基质添加不同浓度硒营养强化剂, 考查所得富硒香菇中总硒及铜、锌、铁、锰、钾、钠、钙、镁等元素含量和16种氨基酸、蛋白质、粗多糖、脂肪、粗纤维、灰分等含量。结果 两个品种香菇总硒含量均随硒添加量的增加而增加; 硒营养强化对香菇营养品质的影响与香菇的品种也有着很大关联, 硒添加量在0~40 mg/kg范围内, ‘向阳二号’大多数指标均呈先升高后降低的趋势, 天冬氨酸、甘氨酸、酪氨酸等含量在硒添加量2 mg/kg时达到最大值, 蛋白质、粗多糖、苏氨酸、缬氨酸等大部分氨基酸含量在硒添加量6 mg/kg时达到最大值; ‘9608’的天冬氨酸、苏氨酸、缬氨酸、蛋白质等大部分指标均在硒添加量40 mg/kg时达到最大值, 但大多都与未添加硒时差异性不显著。结论 对于不同品种的香菇, ‘向阳二号’添加2或6 mg/kg, ‘9608’添加40 mg/kg的硒营养强化剂时, 不仅可以提高香菇的富硒功效性, 还能在一定程度上对香菇品质起到提升作用, 本研究为富硒香菇品种的选择提供参考。

英文摘要:

      Objective To investigate the effects of selenium supplementation on the nutritional quality of Lentinus edodes. Methods The Lentinus edodes species ‘Xiangyang II’ and ‘9608’ were selected for the selenium supplement test. Through the supply mode of cultivation substrate. The content of total selenium, copper, zinc, iron, manganese, potassium, sodium, calcium, magnesium and 16 kinds of amino acids, protein, crude polysaccharide, fat, crude fiber and ash in Lentinus edodes was determined. Results The total selenium content of 2 kinds of Lentinus edodes varieties increased with the increase of selenium supplemental level. In addition, the effects of selenium supplementation on the nutritional quality of Lentinus edodes were also closely related to the varieties of Lentinus edodes. For ‘Xiangyang II’, the selenium supplemental level was in the range of 0-40 mg/kg, and most indexes showed a trend of first increasing and then decreasing. The content of aspartic acid, glycine, tyrosine, etc. reached the maximum when the selenium supplemental level was 2 mg/kg, while the content of protein, crude polysaccharide, threonine, valine, etc. reached the maximum when the selenium supplemental level was 6 mg/kg. For ‘9608’, most of the indexes, such as aspartic acid, threonine, valine, protein, etc. reached the maximum value when the selenium supplemental level was 40 mg/kg, but most of them had no significant difference from that when no selenium was added. Conclusion For different varieties of Lentinus edodes, adding 2 or 6 mg/kg of selenium nutrient fortifier to ‘Xiangyang II’ and 40 mg/kg of selenium nutrient fortifier to ‘9608’ can not only improve the selenium enriched efficacy of Lentinus edodes, but also improve the quality of Lentinus edodes to a certain extent, this study provides a reference for the the selection of selenium-rich Lentinus edodes varieties.