捕后处置对活品底播虾夷扇贝生化代谢的影响
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大连海洋大学,大连海洋大学,大连海洋大学,大连海洋大学,大连海洋大学,大连工业大学

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国家自然科学基金(31271980);国家海洋食品工程技术研究中心开放课题;辽宁省教育厅一般项目(L2015082)


Effects of post-harvest handling on biochemical metabolism of bottom cultured live scallop (Patinopecten yessoensis)
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Dalian Ocean University,Dalian Ocean University,Dalian Ocean University,Dalian Ocean University,Dalian Ocean University,Dalian Polytechnic University

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    摘要:

    为了研究干藏与湿藏对活品虾夷扇贝生化代谢的影响,探讨捕后干露、碰撞和温度3个胁迫因素对活品虾夷扇贝生化代谢的影响。将采捕后的虾夷扇贝分别进行干藏和湿藏处置,干藏采取冰藏方式,保藏时间为4 d;湿藏采取循环海水方式,同时施加温度与碰撞2种胁迫因素作对比,保藏时间为7 d。以闭壳肌中糖原、ATP及其关联物、AEC值、pH值和水溶性蛋白为指标,对4个处置组的活品虾夷扇贝进行跟踪分析。干藏条件下扇贝pH值、ATP含量和AEC值均迅速下降,生理状态快速恶化,短期内(1~3 d)扇贝陆续死亡。湿藏(5和10℃)条件下,扇贝闭壳肌可保持较高的ATP含量、AEC值和pH值,且5℃较10℃湿藏条件下糖原含量更高;相同温度下(10℃),增加碰撞会导致扇贝ATP含量和AEC值下降,糖原消耗增多。研究表明,捕后处置方式与活品虾夷扇贝的生化代谢有密切联系,干露是虾夷扇贝活品流通过程中比较突出的胁迫因素,温度和碰撞也会在一定程度上影响扇贝的生理状态。

    Abstract:

    The paper studied the effects of dry storage and wet storage on biochemical metabolism of live scallop Patinopecten yessoensis during post-harvest process, and discussed the influences of stressors (exposure, mechanical shock and temperature). Dry storage is stored with ice for 4 days. Wet storage is stored with circulating seawater, including three groups:5℃, 10℃ and 10℃ with mechanical shock, for 7 days. We analyzed the biochemical index of ATP related compounds, glycogen, AEC value, pH value and water soluble protein. The results showed that under dry storage, the ATP content, AEC and pH value in the adductor muscle of scallop decreased rapidly, eventually leading death. Under wet storage of 5 and 10℃, the scallop kept higher ATP content, AEC and pH value, and wet storage of 5℃ could maintain higher glycogen content than 10℃. Also at 10℃, adding mechanical shock will lead to the decrease of ATP content, AEC value and the increase of the consumption of glycogen. Therefore, the biochemical metabolism of live scallops is closely related to the post-harvest handling. Exposure is the most harmful stressor, the mechanical shock and temperature could also affect the physiological status.

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刘金洋,刘俊荣,田元勇,张龙,刘慧慧,李冬梅.捕后处置对活品底播虾夷扇贝生化代谢的影响[J].水产学报,2017,41(1):81~87

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  • 收稿日期:2015-10-26
  • 最后修改日期:2016-06-12
  • 录用日期:2016-09-27
  • 在线发布日期: 2017-01-19
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