胃脂肪酶可以在 INFOGEST 静态消化模型中显著提高植物性食物基质的脂肪分解和类胡萝卜素生物可及性。
Gastric lipase can significantly increase lipolysis and carotenoid bioaccessibility from plant food matrices in the harmonized INFOGEST static digestion model.
机构信息
Luxembourg Institute of Health, Department of Population Health, Nutrition and Health Research Group, Strassen, Luxembourg.
Louvain Institute of Biomolecular Science and Technology, UC Louvain, Louvain-la-Neuve, Belgium.
出版信息
Food Funct. 2021 Oct 4;12(19):9043-9053. doi: 10.1039/d1fo00786f.
Gastrointestinal digestion of carotenoids has received much attention, as these lipophilic compounds have been related to several health benefits. Most commonly, static digestion models such as the consensus INFOGEST model are employed to study their bioaccessibility from test matrices. However, an aspect that has been much neglected is the use of gastric lipase. Its inclusion to gastro-intestinal (GI) digestion is expected to foster emulsification of lipophilic constituents prior to their incorporation into mixed micelles. In this study, we compared the effect of various lipases from , , and rabbit gastric extracts (RGE), at different concentrations (0, 30, and 60 U mL), on carotenoid bioaccessibility from several food matrices (tomato juice, spinach, and carrot juice). We also investigated whether co-digestion of pure proteins (whey and soy protein isolates) at 0, 25, and 50% of the equivalent recommended dietary allowance, would interact with carotenoid bioaccessibility in presence or absence of RGE. Lipolysis was also studied. Considering all matrices combined, lipases significantly improved the bioaccessibility of carotenoids ( < 0.001). Compared to other lipases, RGE consistently increased carotenoid bioaccessibility in all tested matrices, by up to 182% ( < 0.001), this effect was partly maintained in the presence of co-digested proteins. Unexpectedly, all 3 lipases improved gastric lipolysis in all matrices, by an average of 10-fold ( < 0.001). In conclusion, only RGE contributed significantly to improving both lipolysis extent and carotenoid bioaccessibility in all tested matrices, while the presence of proteins mitigated the positive effect of lipases on carotenoid bioaccessibility.
类胡萝卜素的胃肠道消化受到了广泛关注,因为这些脂溶性化合物与多种健康益处有关。通常,使用静态消化模型(如共识 INFOGEST 模型)来研究它们从测试基质中的生物可及性。然而,一个被忽视的方面是使用胃脂肪酶。预计在将亲脂成分纳入混合胶束之前,将其纳入胃肠(GI)消化会促进其乳化。在这项研究中,我们比较了来自、和兔胃提取物(RGE)的各种脂肪酶在不同浓度(0、30 和 60 U mL)下对几种食物基质(番茄汁、菠菜和胡萝卜汁)中类胡萝卜素生物利用度的影响。我们还研究了在存在或不存在 RGE 的情况下,纯蛋白质(乳清和大豆蛋白分离物)的共消化是否会与类胡萝卜素生物利用度相互作用。还研究了脂肪分解。考虑到所有组合的基质,脂肪酶显着提高了类胡萝卜素的生物利用度(<0.001)。与其他脂肪酶相比,RGE 始终在所有测试的基质中增加类胡萝卜素的生物利用度,最高可达 182%(<0.001),在共消化的蛋白质存在下,这种作用部分得到维持。出乎意料的是,所有 3 种脂肪酶都平均提高了所有基质中的胃脂肪分解率 10 倍(<0.001)。总之,只有 RGE 显着提高了所有测试基质中脂肪分解程度和类胡萝卜素生物利用度,而蛋白质的存在减轻了脂肪酶对类胡萝卜素生物利用度的积极影响。