Department of Veterinary Medicine and Animal Production (DMVPA), University of Napoli Federico II, Naples, Italy.
Department of Veterinary Sciences, University of Messina, Polo Universitario Annunziata, Messina, Italy.
J Sci Food Agric. 2022 Aug 15;102(10):4121-4130. doi: 10.1002/jsfa.11761. Epub 2022 Jan 22.
In recent decades, grain amaranths have attracted attention due to their valuable combination of nutritional traits, with higher protein and oil content than conventional cereals. Before they can be proposed as an unconventional ingredient in animal feed, many aspects still need to be investigated from field production to nutritive value. The present research aimed to study the agronomic traits, proximate composition, and digestibility/degradability, fatty acid profile, antioxidant activity, and total phenolic content of two grain amaranth species, Amaranthus cruentus and Amaranthus hypochondriacus (for a total of six accessions), grown in a Mediterranean environment.
Both species showed seed yields comparable to or higher than the traditional cereal crops in the same environment. On the whole, A. cruentus resulted in a higher seed production than A. hypochondriacus. Mexico and Montana accessions, both belonging to A. cruentus, showed the highest yield (3.73 t ha , on average). Few differences emerged in nutritive value between species and accessions: the Illinois accession of A. cruentus showed the best performance in terms of in vitro degradability and gas production, but not for volatile fatty acid production; the fermentation kinetics was slowest in the Illinois accession and fastest in the Montana accession of A. cruentus and the India accession of A. hypochondriacus.
From a health perspective, the Nebraska accession of A. hypochondriacus represents the best accession, with the lowest saturated fatty acid content and the highest polyunsaturated fatty acid content. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
近几十年来，由于谷物苋具有营养特性的宝贵组合，其蛋白质和油含量高于传统谷物，因此引起了人们的关注。在将其作为非常规动物饲料成分提出之前，需要从田间生产到营养价值等多方面进行研究。本研究旨在研究两种谷物苋（Amaranthus cruentus 和 Amaranthus hypochondriacus，共 6 个品系）在 地中海环境下的农艺性状、近似成分、消化率/降解率、脂肪酸组成、抗氧化活性和总酚含量。
两个物种的种子产量均与同一环境中的传统谷物相当或更高。总的来说，A. cruentus 的种子产量高于 A. hypochondriacus。属于 A. cruentus 的墨西哥和蒙大拿品系表现出最高的产量（平均 3.73 吨/公顷）。物种和品系之间的营养价值差异很小：A. cruentus 的伊利诺伊州品系在体外降解率和气体产量方面表现最好，但挥发性脂肪酸产量不是最好的；发酵动力学在伊利诺伊州品系最慢，在蒙大拿州品系最快，在 A. hypochondriacus 的印度品系最快。
从健康角度来看，A. hypochondriacus 的内布拉斯加州品系是最好的品系，其饱和脂肪酸含量最低，多不饱和脂肪酸含量最高。© 2022 作者。《食品科学杂志》由 John Wiley & Sons Ltd 代表化学工业协会出版。
