鉴于华鳈(Sarcocheilichthys sinensis)地理分布广泛,不同水域的种群可能存在营养成分差异,为进一步评估钱塘江华鳈(S.sinensis from the Qiantang River)肌肉的营养价值,本研究根据国家相关标准,对钱塘江华鳈肌肉的常规营养成分、氨基...鉴于华鳈(Sarcocheilichthys sinensis)地理分布广泛,不同水域的种群可能存在营养成分差异,为进一步评估钱塘江华鳈(S.sinensis from the Qiantang River)肌肉的营养价值,本研究根据国家相关标准,对钱塘江华鳈肌肉的常规营养成分、氨基酸和脂肪酸组成进行了测定和分析。研究结果显示,钱塘江华鳈肌肉中粗蛋白含量为18.14%±0.49%,粗脂肪含量为2.25%±0.10%,粗灰分含量为1.24%±0.02%,水分含量为78.47%±0.13%;肌肉中含有15种常见氨基酸,氨基酸总量(TAA)为17.83%±0.45%,其中8种必需氨基酸(EAA)总量为7.35%±0.31%,鲜味氨基酸总量(DAA)为6.91%±0.10%;肌肉中富含18种脂肪酸,包括11种饱和脂肪酸(SFA,含量为32.34%±0.31%)、2种单不饱和脂肪酸(MUFA,含量为40.46%±0.53%)和5种多不饱和脂肪酸(PUFA,含量为27.19%±0.71%);肌肉中含有铁(Fe)、锌(Zn)、锰(Mn)和锡(Sn)等微量元素。总之,钱塘江华鳈肉质鲜美,且肌肉中氨基酸、脂肪酸及微量元素的组成丰富、合理,是一种有着丰富营养价值和开发价值的小型经济鱼类。展开更多
Globally,various types of pollution affect coastal waters as a result of human activities.Bioaugmentation and biostimulation are effective methods for treating water pollution.However,few studies have explored the res...Globally,various types of pollution affect coastal waters as a result of human activities.Bioaugmentation and biostimulation are effective methods for treating water pollution.However,few studies have explored the response of coastal prokaryotic and eukaryotic communities to bioaugmentation and biostimulation.Here,a 28-day outdoor mesocosm experiment with two treatments(bioaugmentation-A and combined treatment of bioaugmentation and biostimulation-AS)and a control(untreated-C)were carried out.The experiment was conducted in Meishan Bay to explore the composition,dynamics,and co-occurrence patterns of prokaryotic and eukaryotic communities in response to the A and AS using 16S rRNA and 18S rRNA gene amplicon sequencing.After treatment,Gammaproteobacteria and Epsilonproteobacteria were significantly increased in group AS compared to group C,while Flavobacteriia and Saprospirae were significantly reduced.Dinoflagellata was significantly reduced in AS compared to C,while Chrysophyta was significantly reduced in both AS and A.Compared to C,the principal response curve analyses of the prokaryotic and eukaryotic communities both showed an increasing trend followed by a decreasing trend for AS.Furthermore,the trends of prokaryotic and eukaryotic communities in group A were similar to those in group AS compared with group C,but AS changed them more than A did.According to the species weight table on principal response curves,a significant increase was observed in beneficial bacteria in prokaryotic communities,such as Rhodobacterales and Oceanospirillales,along with a decrease in autotrophs in eukaryotic communities,such as Chrysophyta and Diatom.Topological properties of network analysis reveal that A and AS complicate the interactions between the prokaryotic and eukaryotic communities.Overall,these findings expand our understanding of the response pattern of the bioaugmentation and biostimulation on coastal prokaryotic and eukaryotic communities.展开更多
Research progresses on growth characteristics,application effect and optimization technology of I. aquatica floating bed were reviewed;its application problems in eutrophication water were discussed,and its applicatio...Research progresses on growth characteristics,application effect and optimization technology of I. aquatica floating bed were reviewed;its application problems in eutrophication water were discussed,and its application prospect was forecasted.展开更多
文摘鉴于华鳈(Sarcocheilichthys sinensis)地理分布广泛,不同水域的种群可能存在营养成分差异,为进一步评估钱塘江华鳈(S.sinensis from the Qiantang River)肌肉的营养价值,本研究根据国家相关标准,对钱塘江华鳈肌肉的常规营养成分、氨基酸和脂肪酸组成进行了测定和分析。研究结果显示,钱塘江华鳈肌肉中粗蛋白含量为18.14%±0.49%,粗脂肪含量为2.25%±0.10%,粗灰分含量为1.24%±0.02%,水分含量为78.47%±0.13%;肌肉中含有15种常见氨基酸,氨基酸总量(TAA)为17.83%±0.45%,其中8种必需氨基酸(EAA)总量为7.35%±0.31%,鲜味氨基酸总量(DAA)为6.91%±0.10%;肌肉中富含18种脂肪酸,包括11种饱和脂肪酸(SFA,含量为32.34%±0.31%)、2种单不饱和脂肪酸(MUFA,含量为40.46%±0.53%)和5种多不饱和脂肪酸(PUFA,含量为27.19%±0.71%);肌肉中含有铁(Fe)、锌(Zn)、锰(Mn)和锡(Sn)等微量元素。总之,钱塘江华鳈肉质鲜美,且肌肉中氨基酸、脂肪酸及微量元素的组成丰富、合理,是一种有着丰富营养价值和开发价值的小型经济鱼类。
基金supported by the National Natural Science Foundation of China(No.42077219)the Ningbo Municipal Natural Science Foundation(No.2019A610443)+1 种基金the Hangzhou Municipal Agriculture and Social Development Project(No.2020ZDSJ0697)the Fundamental Research Funds for the Provincial Universities of Zhejiang(No.SJLY2020011)
文摘Globally,various types of pollution affect coastal waters as a result of human activities.Bioaugmentation and biostimulation are effective methods for treating water pollution.However,few studies have explored the response of coastal prokaryotic and eukaryotic communities to bioaugmentation and biostimulation.Here,a 28-day outdoor mesocosm experiment with two treatments(bioaugmentation-A and combined treatment of bioaugmentation and biostimulation-AS)and a control(untreated-C)were carried out.The experiment was conducted in Meishan Bay to explore the composition,dynamics,and co-occurrence patterns of prokaryotic and eukaryotic communities in response to the A and AS using 16S rRNA and 18S rRNA gene amplicon sequencing.After treatment,Gammaproteobacteria and Epsilonproteobacteria were significantly increased in group AS compared to group C,while Flavobacteriia and Saprospirae were significantly reduced.Dinoflagellata was significantly reduced in AS compared to C,while Chrysophyta was significantly reduced in both AS and A.Compared to C,the principal response curve analyses of the prokaryotic and eukaryotic communities both showed an increasing trend followed by a decreasing trend for AS.Furthermore,the trends of prokaryotic and eukaryotic communities in group A were similar to those in group AS compared with group C,but AS changed them more than A did.According to the species weight table on principal response curves,a significant increase was observed in beneficial bacteria in prokaryotic communities,such as Rhodobacterales and Oceanospirillales,along with a decrease in autotrophs in eukaryotic communities,such as Chrysophyta and Diatom.Topological properties of network analysis reveal that A and AS complicate the interactions between the prokaryotic and eukaryotic communities.Overall,these findings expand our understanding of the response pattern of the bioaugmentation and biostimulation on coastal prokaryotic and eukaryotic communities.
基金Supported by the Program for Zhejiang Leading Team of S&T Innovation,China(2011R50029)Special Fund for the Construction of Modern Agricultural Industry Technology System,China(CARS-46-33)Technology Development Research Special Fund of Hangzhou Research Institute,China(20132231E04)
文摘Research progresses on growth characteristics,application effect and optimization technology of I. aquatica floating bed were reviewed;its application problems in eutrophication water were discussed,and its application prospect was forecasted.