SENESCENCE OF BROCCOLI BUDS IS RELATED TO CHANGES IN LIPID-PEROXIDATION
SENESCENCE OF BROCCOLI BUDS IS RELATED TO CHANGES IN LIPID-PEROXIDATION
复制标题
DOI：
10.1021/jf00058a006
复制
发表时间：
1995-10-01
影响因子：
6.1
通讯作者：
BARTH, MM
中科院分区：
文献类型：
--
作者：
ZHUANG, H;HILDEBRAND, DF;BARTH, MM
叶绿素（Chi）、总可溶性蛋白、脂氧合酶（LOX）活性、C-18多不饱和脂肪酸。5 ℃贮藏96 h后，青花菜花蕾中多不饱和脂肪酸（PUFA）、C-18 PUFA过氧化氢和总脂肪酸含量下降，硫代巴比妥酸反应物质（TBA-RS）含量增加。非包装贮藏处理导致水分、叶绿素、可溶性蛋白、多不饱和脂肪酸和脂氧合酶活性显著下降，TBA-RS增加。气调包装（MAP）和自动喷雾（AM）处理保持叶绿素和可溶性蛋白质。MAP和AM储存减少了PUFA和LOX活性的损失，也减少了TBA-RS的增加，储存时间长达96小时。进一步的数据分析表明，变质指数和脂质过氧化（LP）参数之间存在相关性，LP指数的变化之前，在衰老的青花菜芽叶绿素损失。这些结果表明LP的变化和青花菜芽衰老之间的关系。
Chlorophyll (Chi), total soluble protein, lipoxygenase (LOX) activity, C-18 polyunsaturated fatty acid. (PUFA), C-18 PUFA hydroperoxides, and total fatty acid declined and thiobarbituric acid-reactive substances (TBA-RS) increased in senescing broccoli flower buds during postharvest storage of broccoli florets at 5 degrees C over 96 h. The nonpackaged storage treatment resulted in a significant decrease in moisture, Chl, soluble protein, PUFA, and LOX activity and an increase in TBA-RS. Modified atmosphere packaging (MAP) and automatic misting (AM) treatments maintained Chl and soluble protein. MAP and AM storage reduced losses in PUFA and LOX activity and also reduced increases in TBA-RS for up to 96 h of storage. Further analysis of the data showed that a correlation existed between deterioration indices and lipid peroxidation (LP) parameters and the changes in LP indices preceded Chl losses in senescing broccoli buds. These results indicate a relationship between changes in LP and broccoli bud senescence.