Carotenoid bioaccessibility from whole grain and decorticated yellow endosperm sorghum porridge
Carotenoid bioaccessibility from whole grain and decorticated yellow endosperm sorghum porridge
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DOI：
10.1016/j.jcs.2011.08.010
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发表时间：
2011-11-01
影响因子：
3.8
通讯作者：
Ferruzzi, Mario G.
中科院分区：
文献类型：
--
作者：
Kean, Ellie G.;Bordenave, Nicolas;Ferruzzi, Mario G.
高粱是非洲半干旱地区的主要作物和类胡萝卜素的潜在膳食来源，但有关这些色素的生物利用度的信息有限。本研究旨在探讨农艺措施对高粱籽粒发育和成熟阶段类胡萝卜素含量的影响，并通过比较高粱整粒和去皮磨粒制成的粥，评估成熟黄胚乳高粱品种（P88和P1222）类胡萝卜素的生物可利用性。半花后50和30天，P88未套袋脱皮面粉中高粱碾磨部分类胡萝卜素含量分别为2.90 - 7.22 mg/kg，而P88套袋脱皮麸皮中高粱碾磨部分类胡萝卜素含量分别为9.87-13.69 mg/kg。玉米粉碎部分的类胡萝卜素含量显著高于高粱产品。套袋使高粱穗中类胡萝卜素含量增加8-184%。高粱类胡萝卜素的生物可利用性（63-81%）通常高于玉米（45-47%）。在高粱中叶黄素的胶束化（75%）比胡萝卜素的胶束化（52%）更有效，而在玉米中它们相似（40-49%）。这些结果表明，高粱类胡萝卜素的较高的生物可利用性与提高高粱类胡萝卜素含量的努力相结合，可以使高粱提供与普通黄玉米相似水平的生物可利用性类胡萝卜素色素。(C)2011爱思唯尔有限公司保留所有权利。
Sorghum is a staple crop and a potential dietary source of carotenoids in semi-arid regions of Africa, but information on the bioavailability of these pigments is limited. This study aimed at exploring the effects of agronomic manipulation on sorghum carotenoid contents at selected stages of kernel development and maturation and assessing carotenoid bioaccessibility from matured yellow-endosperm sorghum varieties (P88 and P1222), by comparing porridge made from sorghum whole and decorticated milled grains. Carotenoid content of sorghum milled fractions ranged from 2.90 to 7.22 mg/kg in P88 unbagged decorticated flour, at 50 and 30 days after half bloom (DAHB) respectively, to 9.87-13.69 mg/kg in bagged decorticated bran fractions in P88, at 50 and 30 DAHB respectively. Maize milled fractions were significantly (P < 0.05) higher in carotenoid content than all sorghum products. Bagging increased sorghum carotenoid content by 8-184% vs. unbagged panicles. Carotenoid bioaccessibility was generally higher from sorghum (63-81%) compared to maize (45-47%). Micellarization of xanthophylls (75%) was more efficient than carotenes (52%) in sorghum, while they were similar in maize (40-49%). These results suggest that the higher bioaccessibility of sorghum carotenoids combined with efforts to enhance sorghum carotenoid content may allow for sorghum to provide similar levels of bioaccessible carotenoid pigments as common yellow maize. (C) 2011 Elsevier Ltd. All rights reserved.