如今,制定合适的农业食品管理和增值战略是世界范围内最重要的挑战之一。在这种情况下,当前的研究旨在探索不同品种的增值策略(Khalas,贾布里,露露,Booman,和Sayer)通过提取多酚化合物并研究其促进健康的生物活性。对产生的提取物进行了酚类含量的比较分析,抗氧化剂,抗炎,抗溶血,和体外模拟胃肠消化(SGID)的酶抑制活性。总酚含量(TPC)范围为217.3至1846.9mgGAE/100g鲜重。完成SGID后,TPC从570.8mgGAE/100g鲜重(未消化)显着增加,用Khalas品种达到1606.3mgGAE/100g鲜重的最高值。总的来说,胃和完全SGID处理的提取物表现出更高的抗氧化活性,与五个选定日期品种的未消化提取物相比。同样,胃和完全SGID促进了对糖尿病相关消化酶具有明显更高抑制水平的生物活性成分的释放。此外,来自所有品种的提取物显示,当经历胃消化阶段时,对血脂相关酶标记和抗炎活性的抑制作用增加,在完成SGID后下降。主成分分析(PCA)表明,样品中存在的TPC会影响较高的生物活性。总的来说,低质量的日期可以被认为是具有有趣的营养特性的生物活性多酚的潜在来源,在通过胃肠道运输时释放。
Nowadays, the development of suitable strategies for the management and valorization of agri-food products is one of the most important challenges worldwide. In this context, the current research
study aimed to explore a valorization strategy for different varieties (Khalas, Jabri, Lulu, Booman, and Sayer) of low-grade date fruit by extracting polyphenolic compounds and investigating their health-promoting bioactive properties. The generated extracts were comparatively analyzed for their phenolic contents, antioxidant, anti-inflammatory, anti-hemolytic, and enzyme inhibitory activities upon in vitro simulated gastrointestinal digestion (SGID). The total phenolic contents (TPC) ranged from 217.3 to 1846.9 mg GAE/100 g fresh weight. After complete SGID, the TPC remarkably increased from 570.8 mg GAE/100 g fresh weight (undigested), reaching the highest value of 1606.3 mg GAE/100 g fresh weight with the Khalas cultivar. Overall, gastric and complete-SGID-treated extracts exhibited higher antioxidant activities, compared to the undigested extracts for the five selected date varieties. Similarly, the gastric and complete SGID promoted the release of bioactive components endowed with significantly higher inhibition levels towards digestive enzymes related to diabetes. Moreover, extracts from all varieties revealed an increase in the inhibition of lipidemic-related enzymatic markers and anti-inflammatory activities when subjected to the gastric digestion phase, which decreased after complete SGID. Principal component analysis (PCA) suggested that higher bioactive properties were influenced by the TPC present in the samples. Overall, low-quality dates could be considered as a potential source of bioactive polyphenols with interesting nutraceutical properties, released upon their transit through the gastrointestinal tract.