Changes in fatty chain compositions of lipid classes during frozen storage of the adductor muscle of giant ezo scallop (Patinopecten yessoensis)
Changes in fatty chain compositions of lipid classes during frozen storage of the adductor muscle of giant ezo scallop (Patinopecten yessoensis)
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DOI：
10.1016/s0305-0491(99)00016-4
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发表时间：
1999-04-01
影响因子：
2.2
通讯作者：
Koizumi, C
中科院分区：
文献类型：
--
作者：
Jeong, BY;Ohshima, T;Koizumi, C
研究了-20 ℃低温贮藏条件下巨型虾夷扇贝闭壳肌中脂类成分，特别是甘油磷脂的变化。在贮藏过程中，总脂（TL）和极性脂（PL）含量下降，非极性脂（NL）含量上升。甘油磷酸胆碱（GPC）和甘油磷酸乙醇胺（GPE）分别减少50%和15%的初始含量，而溶血GPC和游离脂肪酸增加。贮藏过程中，TL和PL中20：5 n-3和22：6 n-3等多不饱和脂肪酸的含量降低，NL中多不饱和脂肪酸的含量增加。在烯基酰基-GPE和二酰基-GPC中，甘油部分的sn-1位中相对较长的酸的百分比以比较短链更高的速率降低，而二酰基-GPE的结果与烯基酰基-GPE和二酰基-GPC的结果相反。在烯酰基-GPE和二酰基-GPC的sn-2位的主要脂肪酸中，22：6 n-3的百分比与20：5 n-3的高水平相比有所下降，而二酰基-GPE的百分比有所增加。(C)1999 Elsevier Science Inc. All rights reserved.
Changes in lipid components, particularly glycerophospholipids in the adductor muscle of giant ezo scallop during storage at - 20 degrees C, were investigated. During storage, the contents of total lipid (TL) and polar lipid (PL) decreased but that of non-polar lipid (NL) increased. Glycerophosphorylcholine (GPC) and glycerophosphorylethanolamine (GPE) decreased by 50 and 15% of the each initial content, while lyso-GPC and free fatty acids increased. The percentages of polyunsaturated fatty acids such as 20:5n-3 and 22:6n-3 in the TL and PL fractions decreased during storage, but those of the polyunsaturated fatty acids in the NL increased. In the alkenylacyl-GPE and diacyl-GPC, the percentages of relatively longer acids in the sn-l positions of glycerol moieties decreased at higher rates than did the shorter chains, whereas the results for diacyl-GPE were opposite to those of alkenylacyl-GPE and diacyl-GPC. In the prominent fatty acids in the sn-2 positions of alkenylacyl-GPE and diacyl-GPC, the percentage of 22:6n-3 decreased from compared to the high level of 20:5n-3, while that of diacyl-GPE increased. (C) 1999 Elsevier Science Inc. All rights reserved.