In a 10-day aquarium experiment, this investigation examines macrophyte restoration in eutrophic Lake Taihu, the physiological effects of different plant biomass levels and of increasing natural cyanobacterial concent...In a 10-day aquarium experiment, this investigation examines macrophyte restoration in eutrophic Lake Taihu, the physiological effects of different plant biomass levels and of increasing natural cyanobacterial concentrations on a submerged macrophyte, Vallisneria asiatica. Cyanobacterial stress suppressed the superoxide dismutase （SOD） activity of the plant＇s leaves and induced the catalase （CAT） and peroxidase （POD） activities of its roots. The soluble protein content in V. asiatica decreased with an increase in natural cyanobacterial concentrations, whereas the malonaldehyde （MDA） increased significantly at chlorophyll a （Chl a） concentrations of 222 and 262 μg/L in water. V. asiatica adapted to the stress caused by cyanobacterial concentrations by adjusting its antioxidant defense system to remove the excessive reactive oxygen species when the algal Chl a concentration was 〉109 μg/L. Additionally, high biomass of V. asiatica （2 222 g FW/m^2） can inhibit the reproduction of cyanobacteria more significantly than low biomass （1 111 g FW/m^2）. High biomass of V. asiatica increased the oxidative stress in an individual plant when the initial Chl a concentration in the water reached 222 and 262 μg/L, as expressed by the increased MDA in leaves, compared with low biomass of K asiatica. This provides a basis for controlling cyanobacterial concentrations and V. asiatica biomass for the recovery of V. asiatica in eutrophic Lake Taihu.展开更多
本试验以山羊肉为材料进行了超声波处理,在前人的基础上选择不同时间的超声处理,分别处理0min,1min,3min,5min,7min,10min,15min,处理后在0～4℃成熟0d,1d,2d,3d,4d,5d,7d.对羊肉的可溶性蛋白浓度(concentration of soluble protein,CSP...本试验以山羊肉为材料进行了超声波处理,在前人的基础上选择不同时间的超声处理,分别处理0min,1min,3min,5min,7min,10min,15min,处理后在0～4℃成熟0d,1d,2d,3d,4d,5d,7d.对羊肉的可溶性蛋白浓度(concentration of soluble protein,CSP)、肌小节片断化指数(myrifribril fragment index,MFI)分别作了定性和定量试验,二者的相关系数为0.75,提出了用CSP作为评价羊肉嫩度的指标,比MFI测定简单方便.实验结果表明超声波处理明显提高了羊肉的嫩度.展开更多
基金Supported by the Research Institute for East Asia Environments of Kyushu University and Mitsubishi Corporation in Japan
文摘In a 10-day aquarium experiment, this investigation examines macrophyte restoration in eutrophic Lake Taihu, the physiological effects of different plant biomass levels and of increasing natural cyanobacterial concentrations on a submerged macrophyte, Vallisneria asiatica. Cyanobacterial stress suppressed the superoxide dismutase （SOD） activity of the plant＇s leaves and induced the catalase （CAT） and peroxidase （POD） activities of its roots. The soluble protein content in V. asiatica decreased with an increase in natural cyanobacterial concentrations, whereas the malonaldehyde （MDA） increased significantly at chlorophyll a （Chl a） concentrations of 222 and 262 μg/L in water. V. asiatica adapted to the stress caused by cyanobacterial concentrations by adjusting its antioxidant defense system to remove the excessive reactive oxygen species when the algal Chl a concentration was 〉109 μg/L. Additionally, high biomass of V. asiatica （2 222 g FW/m^2） can inhibit the reproduction of cyanobacteria more significantly than low biomass （1 111 g FW/m^2）. High biomass of V. asiatica increased the oxidative stress in an individual plant when the initial Chl a concentration in the water reached 222 and 262 μg/L, as expressed by the increased MDA in leaves, compared with low biomass of K asiatica. This provides a basis for controlling cyanobacterial concentrations and V. asiatica biomass for the recovery of V. asiatica in eutrophic Lake Taihu.
文摘本试验以山羊肉为材料进行了超声波处理,在前人的基础上选择不同时间的超声处理,分别处理0min,1min,3min,5min,7min,10min,15min,处理后在0～4℃成熟0d,1d,2d,3d,4d,5d,7d.对羊肉的可溶性蛋白浓度(concentration of soluble protein,CSP)、肌小节片断化指数(myrifribril fragment index,MFI)分别作了定性和定量试验,二者的相关系数为0.75,提出了用CSP作为评价羊肉嫩度的指标,比MFI测定简单方便.实验结果表明超声波处理明显提高了羊肉的嫩度.
