对13种常见食用菌的氨基酸组成进行测定和营养评价。采用全自动氨基酸分析仪,按照GB 5009.124-2016《食品安全国家标准食品中氨基酸的测定》测定食用菌中氨基酸含量,通过氨基酸评分(Amino acid score,AAS)和氨基酸比值系数(Ratio coeffi...对13种常见食用菌的氨基酸组成进行测定和营养评价。采用全自动氨基酸分析仪,按照GB 5009.124-2016《食品安全国家标准食品中氨基酸的测定》测定食用菌中氨基酸含量,通过氨基酸评分(Amino acid score,AAS)和氨基酸比值系数(Ratio coefficient of amino acid,RC)法对氨基酸进行营养评价。结果显示,13种食用菌中均含有16种氨基酸,其中氨基酸总量和必需氨基酸总量最高的食用菌均为双孢蘑菇,含量最高的氨基酸均为谷氨酸,鲜味氨基酸含量占氨基酸总量的20.9%~35.5%。13种食用菌中,氨基酸配比最接近世界卫生组织和联合国粮食及农业组织(World Health Organization/Food and Agriculture Organization of the United Nations,WHO/FAO)提出的氨基酸模式、营养最为均衡的是竹荪。食用菌中苏氨酸比较丰富,蛋氨酸相对不足,竹荪的第一限制氨基酸为赖氨酸,其他食用菌的第一限制氨基酸均为蛋氨酸。研究结果表明,食用菌中氨基酸含量丰富,是优质蛋白来源,具有较高营养价值,可作为蛋氨酸限制饮食的天然食材。展开更多
This paper studied the characteristics of the natural understory vegetation in the artificial masson pine forest replanted after Chinese fir cut for 13 years.The results indicated that there were 100 species of unders...This paper studied the characteristics of the natural understory vegetation in the artificial masson pine forest replanted after Chinese fir cut for 13 years.The results indicated that there were 100 species of understory vegetation,including 74 species of shrub or small arbor,accounting for 74.0% of the total species,belonging to 41 faculties and 63 categories,and 26 herbs belonging to 14 faculties and 23 categories.The tropical and subtropical elements were dominant in the vegetation,while the temperate ones were scare.The species diversity and richness were decreased after masson pine regenerated from Chinese fir.The analysis of important value showed that the main species of shrub or small arbor were Tinomiscium tonkinensis,Mycetia longiflora,Evodia lepta,Paederia scandens,Mussaenda pubuscens,Actinodaphne pilosa and Quercus glauca,and those of herb were Cyrtococcum patens,Blechnum orientale,Dicranopteris dichotoma,Adiantum flabellulatum,Adiantum edgeworthii and Pteris semipinnata.The biomass of the vegetation in different slope positions was decreased in order of upside>downside>middle part.There was a significantly positive correlation between the niche breath and the important value of main woody population.The important values of woody populations were higher than those of the others,and their niche breadths were also larger,which meant that they were more adaptable to the habitat.The niche overlaps of six population counterparts Tinomiscium tonkinensis-Mycetia longiflora,Tinomiscium tonkinensis-Evodia lepta,Mussaenda pubuscens-Maesa japonica,Quercus glauca-Aphananthe aspera,Actinodaphne pilosa-Saraca chinensis and Evodia lepta-Quercus glaucathese were very large,which could offer information for the restoration and reconstruction in selecting natural vegetation.The large niche overlaps of major woody population counterparts suggested their similar utilization of natural resources.展开更多
文摘对13种常见食用菌的氨基酸组成进行测定和营养评价。采用全自动氨基酸分析仪,按照GB 5009.124-2016《食品安全国家标准食品中氨基酸的测定》测定食用菌中氨基酸含量,通过氨基酸评分(Amino acid score,AAS)和氨基酸比值系数(Ratio coefficient of amino acid,RC)法对氨基酸进行营养评价。结果显示,13种食用菌中均含有16种氨基酸,其中氨基酸总量和必需氨基酸总量最高的食用菌均为双孢蘑菇,含量最高的氨基酸均为谷氨酸,鲜味氨基酸含量占氨基酸总量的20.9%~35.5%。13种食用菌中,氨基酸配比最接近世界卫生组织和联合国粮食及农业组织(World Health Organization/Food and Agriculture Organization of the United Nations,WHO/FAO)提出的氨基酸模式、营养最为均衡的是竹荪。食用菌中苏氨酸比较丰富,蛋氨酸相对不足,竹荪的第一限制氨基酸为赖氨酸,其他食用菌的第一限制氨基酸均为蛋氨酸。研究结果表明,食用菌中氨基酸含量丰富,是优质蛋白来源,具有较高营养价值,可作为蛋氨酸限制饮食的天然食材。
文摘This paper studied the characteristics of the natural understory vegetation in the artificial masson pine forest replanted after Chinese fir cut for 13 years.The results indicated that there were 100 species of understory vegetation,including 74 species of shrub or small arbor,accounting for 74.0% of the total species,belonging to 41 faculties and 63 categories,and 26 herbs belonging to 14 faculties and 23 categories.The tropical and subtropical elements were dominant in the vegetation,while the temperate ones were scare.The species diversity and richness were decreased after masson pine regenerated from Chinese fir.The analysis of important value showed that the main species of shrub or small arbor were Tinomiscium tonkinensis,Mycetia longiflora,Evodia lepta,Paederia scandens,Mussaenda pubuscens,Actinodaphne pilosa and Quercus glauca,and those of herb were Cyrtococcum patens,Blechnum orientale,Dicranopteris dichotoma,Adiantum flabellulatum,Adiantum edgeworthii and Pteris semipinnata.The biomass of the vegetation in different slope positions was decreased in order of upside>downside>middle part.There was a significantly positive correlation between the niche breath and the important value of main woody population.The important values of woody populations were higher than those of the others,and their niche breadths were also larger,which meant that they were more adaptable to the habitat.The niche overlaps of six population counterparts Tinomiscium tonkinensis-Mycetia longiflora,Tinomiscium tonkinensis-Evodia lepta,Mussaenda pubuscens-Maesa japonica,Quercus glauca-Aphananthe aspera,Actinodaphne pilosa-Saraca chinensis and Evodia lepta-Quercus glaucathese were very large,which could offer information for the restoration and reconstruction in selecting natural vegetation.The large niche overlaps of major woody population counterparts suggested their similar utilization of natural resources.
