THE DISTRIBUTION OF ACYL LIPIDS IN THE GERM, ALEURONE, STARCH AND NON-STARCH ENDOSPERM OF 4 WHEAT-VARIETIES
THE DISTRIBUTION OF ACYL LIPIDS IN THE GERM, ALEURONE, STARCH AND NON-STARCH ENDOSPERM OF 4 WHEAT-VARIETIES
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DOI：
10.1002/jsfa.2740310904
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发表时间：
1980-01-01
影响因子：
4.1
通讯作者：
MORRISON, WR
中科院分区：
文献类型：
--
作者：
HARGIN, KD;MORRISON, WR
测定了Atou（Soft English）、Flinor（Hard English）、沃尔德龙（Waldron）和Edmore（Amber Durum）小麦胚芽、糊粉、淀粉和胚乳非淀粉组分中23种酰基脂质的数量分布。所有4种小麦的比例相似果皮（干基）（6.8-8.6%），细菌（2.5-3.0%），淀粉质胚乳（78.7-84.5%），淀粉（59.3-67.5%）和类似数量的酰基脂质在整个籽粒胚乳中淀粉含量为0.8 - 1.2%，胚芽含量为25.7-30.5%，非淀粉含量为0.8-1.1%。Flinor、沃尔德龙和Edmore的糊粉为7.3-10%，含有8.7-10.6%的脂类，而Atou的糊粉重量异常低（4.0%），相应的脂类含量高（19.4%）。仅在Atou中研究了脂肪酸脂，其中它们占整个籽粒干重的1.3%和总酰基脂质的3.8%。胚芽和糊粉层中的脂质由甘油三酯（60.3-79.3%）、其它非极性脂质（5.6-12.0%）和磷脂（13.6-17.9%）组成。淀粉脂几乎完全是溶血磷脂（89.4-94.4%）。胚乳非淀粉脂类的变异较大，主要由甘油三酯（13.7-34.1%）、其他非极性脂类（33.2-48.5%）、糖脂（18.6-38.3%）和磷脂（21.9-35.3%）组成。Edmore具有最高水平的甘油三酯和非极性脂质，以及最低水平的糖脂（如在四倍体小麦中所预期的）。Atou类似于Edmore，其甾醇酯和糖脂水平低，但它也有最少的磷脂。
The quantitative distribution of 23 classes of acyl lipids was determined in the germ, aleurone, starch and endosperm non-starch fractions of Atou (Soft English), Flinor (Hard English), Waldron (US Hard Red Spring) and Edmore (US Amber Durum) wheats. All 4 wheats had similar proportions (dry basis) of pericarp (6.8-8.6%), germ (2.5-3.0%), starchy endosperm (78.7-84.5%), starch (59.3-67.5%) and similar quantities of acyl lipids in the whole kernels (2.8-3.2%), germ (25.7-30.5%), starch (0.8-1.2%) and endosperm non-starch fractions (0.8-1.1%). Flinor, Waldron and Edmore had 7.3-10% aleurone containing 8.7-10.6% lipids, but Atou appeared to have an abnormally low aleurone weight (4.0%) and a correspondingly high lipid content (19.4%). Pericarp acyl lipids were studied only in Atou, where they comprised 1.3% of the dry weight and 3.8% of the total acyl lipids in the whole kernel. Lipids in the germ and aleurone consisted of triglycerides (60.3-79.3%), other non-polar lipids (5.6-12.0%) and phospholipids (13.6-17.9%). Starch lipids were almost exclusively lysophospholipids (89.4-94.4%). Greater variation was found in the endosperm non-starch lipids which consisted of triglycerides (13.7-34.1%), other non-polar lipids (33.2-48.5%), glycolipids (18.6-38.3%) and phospholipids (21.9-35.3%). Edmore had the highest levels of triglycerides and non-polar lipids, and the lowest levels of glycolipids (as expected in a tetraploid wheat). Atou resembled Edmore in its low levels of steryl esters and glycolipids, but it also had least phospholipids.