ICYTAC, Instituto de Ciencia y Tecnología de Córdoba (CONICET-UNC), Córdoba, Argentina.
Facultad de Ciencias Agropecuarias, UNC, Córdoba, Argentina.
Int J Food Sci Nutr. 2024 Dec;75(8):774-785. doi: 10.1080/09637486.2024.2405117. Epub 2024 Oct 1.
Purple maize is a pigmented variety rich in antioxidants. Arabinoxylans (AX) are prebiotic compounds also found in the grain wall that can form gels. Recently, antioxidants have extensively been studied for their beneficial effects. However, these bioactive compounds do not easily reach the intestine in a stable form. These gels can protect certain compounds during digestion. This work aimed to extract the AX and simultaneously obtain the antioxidant compounds present in the external walls of the purple maize grain to produce gels with 2% and 4% AX to apply an digestion method. Popcorn maize (unpigmented) was used as a control. The amount of ferulic acid, polyphenols, and anthocyanins, and their antioxidative activity, were measured at digestion of the gels. This work highlights the ability of AX gels to enhance the potential bioavailability of antioxidant compounds including anthocyanins from purple maize after digestion.
紫玉米是一种富含抗氧化剂的有色品种。阿拉伯木聚糖（AX）是存在于谷物细胞壁中的一种益生元化合物，也可以形成凝胶。最近，人们广泛研究了抗氧化剂的有益作用。然而，这些生物活性化合物在稳定的形式下不容易到达肠道。这些凝胶可以在消化过程中保护某些化合物。本工作旨在提取 AX，同时获得紫玉米外部细胞壁中存在的抗氧化化合物，以生产 2%和 4% AX 的凝胶，并应用消化方法。爆米花玉米（非色素）用作对照。在凝胶消化过程中，测量了阿魏酸、多酚和花青素的含量及其抗氧化活性。这项工作强调了 AX 凝胶在消化后增强包括花青素在内的紫玉米抗氧化化合物潜在生物利用度的能力。
