The processes of scallop meats can produce a large amount of by-products like scallop skirts,which are rich in nutrients. This work aimed to obtain the information about antioxidant peptides derived from scallop skirt...The processes of scallop meats can produce a large amount of by-products like scallop skirts,which are rich in nutrients. This work aimed to obtain the information about antioxidant peptides derived from scallop skirts of Mimachlamys nobilis. The hydro-lysates obtained by trypsin exhibited the highest antioxidant activity( 75.6%,79.5% and 76.7% using DPPH,hydroxyl and superoxide anion radical scavenging activity assays,respectively). The antioxidant peptides( MNAP) were separated and purified using UF membranes,GFC processes and RP-HPLC,and the antioxidant activity of MNAP was identified to be 85.7% using DPPH radical scavenging activity assay. The peptides( MNAP) were composed of two peptides with their molecular weights2 855.6 Da and 3 007.2 Da using MALDI-TOF-MS,respectively. The results suggested that the scallop skirts of Mimachlamys nobilis could be explored as a source of antioxidant peptides.展开更多
目的研究扇贝裙边糖胺聚糖（glycosaminoglycan from Scallop Skirt，SS-GAG）体外抗单纯疱疹病毒Ⅰ型（HSV-Ⅰ）的作用。方法运用单纯疱疹病毒Ⅰ型（HSV-ⅠSM44株），并以非洲绿猴肾细胞（Vero细胞）为宿主细胞，通过观察病毒感染后的...目的研究扇贝裙边糖胺聚糖（glycosaminoglycan from Scallop Skirt，SS-GAG）体外抗单纯疱疹病毒Ⅰ型（HSV-Ⅰ）的作用。方法运用单纯疱疹病毒Ⅰ型（HSV-ⅠSM44株），并以非洲绿猴肾细胞（Vero细胞）为宿主细胞，通过观察病毒感染后的细胞变性反应（cytopathiceffect，CPE）和运用MTF比色法，检测不同浓度药物SS—GAG对Ⅰ型单纯疱疹病毒是否有直接的灭活作用、对HSV—Ⅰ感染复制的抑制活性以及对HSV—Ⅰ感染细胞的综合作用等，并观察药物对Vero细胞的毒性作用。结果与病毒对照组相比，SS-GAG各浓度组（100、50、25mg·L^-1）能有效地保护经HSV—Ⅰ感染的Vero细胞，使细胞活性增强（P〈0．01）；并减弱HSV—Ⅰ导致的病变效应，抑制病毒的复制。此作用随着药物浓度的增加而增强。但是SS—GAG对HSV—Ⅰ没有直接的灭活作用；SSGAG在50～1600mg·L^-1浓度范围内对Vero细胞无明显的细胞毒性。结论SS-GAG在体外实验系统中显示出明显的保护宿主细胞抵抗HSV-Ⅰ病毒感染的活性作用。展开更多
基金Sponsored by the National Science&Technology Pillar Program During the 12th Five-year Plan Period(Grant No.2015BAD17B03)Subject Construction Fund Guided by HIT(Grant No.WH20150206,WH20160206)Key Research and Development Plan of Shandong Province(Grant No.2015GSF115016)
文摘The processes of scallop meats can produce a large amount of by-products like scallop skirts,which are rich in nutrients. This work aimed to obtain the information about antioxidant peptides derived from scallop skirts of Mimachlamys nobilis. The hydro-lysates obtained by trypsin exhibited the highest antioxidant activity( 75.6%,79.5% and 76.7% using DPPH,hydroxyl and superoxide anion radical scavenging activity assays,respectively). The antioxidant peptides( MNAP) were separated and purified using UF membranes,GFC processes and RP-HPLC,and the antioxidant activity of MNAP was identified to be 85.7% using DPPH radical scavenging activity assay. The peptides( MNAP) were composed of two peptides with their molecular weights2 855.6 Da and 3 007.2 Da using MALDI-TOF-MS,respectively. The results suggested that the scallop skirts of Mimachlamys nobilis could be explored as a source of antioxidant peptides.
文摘目的研究扇贝裙边糖胺聚糖（glycosaminoglycan from Scallop Skirt，SS-GAG）体外抗单纯疱疹病毒Ⅰ型（HSV-Ⅰ）的作用。方法运用单纯疱疹病毒Ⅰ型（HSV-ⅠSM44株），并以非洲绿猴肾细胞（Vero细胞）为宿主细胞，通过观察病毒感染后的细胞变性反应（cytopathiceffect，CPE）和运用MTF比色法，检测不同浓度药物SS—GAG对Ⅰ型单纯疱疹病毒是否有直接的灭活作用、对HSV—Ⅰ感染复制的抑制活性以及对HSV—Ⅰ感染细胞的综合作用等，并观察药物对Vero细胞的毒性作用。结果与病毒对照组相比，SS-GAG各浓度组（100、50、25mg·L^-1）能有效地保护经HSV—Ⅰ感染的Vero细胞，使细胞活性增强（P〈0．01）；并减弱HSV—Ⅰ导致的病变效应，抑制病毒的复制。此作用随着药物浓度的增加而增强。但是SS—GAG对HSV—Ⅰ没有直接的灭活作用；SSGAG在50～1600mg·L^-1浓度范围内对Vero细胞无明显的细胞毒性。结论SS-GAG在体外实验系统中显示出明显的保护宿主细胞抵抗HSV-Ⅰ病毒感染的活性作用。
