Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, I-80055 Portici, Naples, Italy; School of Science, Engineering & Technology, Division of Food & Drink, University of Abertay, Bell Street, DD1 1HG Dundee, Scotland, United Kingdom.
School of Science, Engineering & Technology, Division of Food & Drink, University of Abertay, Bell Street, DD1 1HG Dundee, Scotland, United Kingdom.
Food Chem. 2018 Jul 15;254:137-143. doi: 10.1016/j.foodchem.2018.01.189. Epub 2018 Feb 2.
Chia is a food plant producing seeds which have seen increasing interest owing to their health benefits. This work is the first report on the metabolite profile, total polyphenols and antioxidant activity of chia seeds, determined by ultrasound-assisted extraction, coupled with gas chromatography-mass spectrometry (UAE GC-MS). Different chia sources were compared: two commercial (black and white) and three early flowering (G3, G8 and G17) mutant genotypes. Organic extracts were mainly composed of mono- and polyunsaturated fatty acids with alpha-linolenic being the most abundant. Polar extracts contained sucrose, methylgalactoside and glucose as main sugars. Antioxidant activity and total polyphenolic content were correlated. Chemical composition and yield potential of early flowering genotypes were different from commercial chia, and while white chia showed the highest content of omega-3 fatty acids, the high content of nutraceuticals in G17 and G8 suggests them as a potential source of raw materials for the food/feed industry.
奇亚籽是一种食用植物，其种子因其对健康的益处而受到越来越多的关注。本工作首次报道了采用超声辅助提取结合气相色谱-质谱联用技术（UAE-GC-MS）分析奇亚籽代谢产物谱、总多酚和抗氧化活性的结果。比较了两种商业（黑、白）和三种早开花（G3、G8 和 G17）突变体基因型的奇亚籽来源。有机提取物主要由单不饱和和多不饱和脂肪酸组成，其中α-亚麻酸含量最丰富。极性提取物含有蔗糖、甲基半乳糖苷和葡萄糖作为主要糖。抗氧化活性和总多酚含量呈正相关。早开花基因型的化学成分和产量潜力与商业奇亚籽不同，虽然白奇亚籽的 ω-3 脂肪酸含量最高，但 G17 和 G8 中含有丰富的营养成分，表明它们可能是食品/饲料工业的潜在原料来源。
