食品科学

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响应面优化虾夷扇贝生殖腺多肽-Ca2+螯合物制备工艺

金文刚,吴海涛,朱蓓薇,李新生,郑 杰,刘 铭,王凤红   

  1. 1.西北农林科技大学食品科学与工程学院,陕西 杨凌 712100;2.陕西理工学院生物科学与工程学院,陕西 汉中 723000;
    3.大连工业大学食品学院,海洋食品教育部工程研究中心,辽宁 大连 116034;
    4.国家贝类加工技术研发分中心(大连),辽宁 大连 116034;5. 辽宁省海洋水产科学研究院,辽宁 大连 116023
  • 出版日期:2013-08-25 发布日期:2013-09-03

Optimization of Preparation of Peptide-Ca2+ Complex from Scallop (Patinopecten yessoensis) Gonad

JIN Wen-gang,WU Hai-tao,ZHU Bei-wei,LI Xin-sheng,ZHENG Jie,LIU Ming,WANG Feng-hong   

  1. 1. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China;
    2. School of Bioscience and Engineering, Shaanxi University of Technology, Hanzhong 723000, China;
    3. Engineering Research Center of Seafood, Ministry of Education, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China;4. National R&D Branch Center for Shellfish Processing, Dalian 116034, China;
    5. Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
  • Online:2013-08-25 Published:2013-09-03

摘要:

优化虾夷扇贝生殖腺多肽-Ca2+螯合物的制备工艺,在单因素试验的基础上,应用响应面二次回归中心旋转组合试验设计,分析了反应pH值、时间、温度和多肽-氯化钙质量比对螯合物得率的影响。结果表明:多肽与Ca2+螯合的最优工艺条件为pH8.0、温度64.8℃、反应时间22min、质量比3.4:1,在此条件下,螯合物得率预测值为6.78%,实际值为6.81%,该螯合物中氮和钙质量分数分别为(6.67±0.11)%和(9.75±0.17)%。红外光谱分析表明,多肽中的氨基和羧基可能均参与了Ca2+的螯合反应。体外模拟胃肠道消化后的钙透析率为(41.86±2.33)%,但与未消化对照组无显著差异(P>0.05)。因此,虾夷扇贝生殖腺多肽-Ca2+螯合物具有较好的钙生物利用度。

关键词: 虾夷扇贝生殖腺, 响应面, 多肽-Ca2+螯合物, 体外消化, 透析

Abstract:

Response surface methodology based on a quadratic central composite rotary design was used to optimize the
preparation of peptide-Ca2+ complex from scallop (Patinopecten yessoensis) gonad. The influence of pH, time, temperature,
and peptide/calcium ratio on the yield of peptide-Ca2+ complex was investigated. The results showed that the optimum
reaction conditions for forming Ca2+ chelating peptides were pH 8.0, 22 min, 64.8 ℃, and peptide/calcium ratio 3.4:1. Under
these conditions, the predicted yield was 6.78% while the actual yield was 6.81%. The complex contained (6.67 ± 0.11)%
nitrogen and (9.75 ± 0.17)% calcium. Infrared spectroscopic study revealed that both amino and carboxyl groups were
involved in the complex. Calcium dialyzability of the complex after in vitro digestion was (41.86 ± 2.33)%, but showed
no significant difference from control (P > 0.05). Therefore, scallop (Patinopecten yessoensis) gonad hydrolysate-Ca2+
complex might have good calcium bioavailability.

Key words: scallop (Patinopecten yessoensis) gonad, response surface methodology, peptide-Ca2+ complex, in vitro digestion, dialysis