Abstract Galactomannans based biopolymers are common constituents of ungerminated seeds of numerous leguminous plants present in endosperm of seeds. They are highly valuable in industries due to their ability to modify the flow behavior of aqueous solutions viz. thicken, suspend, gel, stabilize, swell and film formation. Consequently, they have diverse applications in food and non-food due to their biocompatibility, biodegradability, sustainability and abundance. Cassia occidentalis, an annual weed occurring throughout India is a rich source of seed galactomannans (∼30% endosperm). The gum derived from seed endosperm can be potentially utilized in a number of industries to replace the conventional expensive gums. However, the extracted gum has considerable disadvantages such as uncontrolled hydration, changes in viscosity during storage, pH-dependent solubility, lower shelf life etc, thereby, limiting their vast industrial applications. Intriguingly, these limitations can be overcome by functionalization of hydroxyl groups. Therefore, grafting onto C. occidentalis seed gum was carried out with acrylonitrile in presence of ceric ammonium nitrate under inert atmosphere. The reaction conditions were optimized by varying concentration of CAN, nitric acid, acrylonitrile, reaction temperature and time. The grafted gum was characterized using FTIR, TGA, DTG, X-Ray and SEM analysis.

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Ce(IV)-离子引发1,3半乳甘露聚糖生物聚合物与丙烯腈的接枝

摘要 基于半乳甘露聚糖的生物聚合物是种子胚乳中存在的许多豆科植物未发芽种子的常见成分。它们在工业中非常有价值，因为它们能够改变水溶液的流动行为，即。增稠、悬​​浮、凝胶、稳定、膨胀和成膜。因此，由于它们的生物相容性、生物降解性、可持续性和丰富性，它们在食品和非食品中具有多种应用。Cassia occidentalis 是一种遍布印度的一年生杂草，是种子半乳甘露聚糖（约 30% 胚乳）的丰富来源。源自种子胚乳的树胶可潜在地用于许多行业以替代传统的昂贵树胶。然而，提取的树胶具有相当大的缺点，例如不受控制的水化、储存过程中粘度的变化、pH 依赖性溶解度、较低的保质期等，从而限制了它们的广泛工业应用。有趣的是，这些限制可以通过羟基的官能化来克服。因此，在惰性气氛下，在硝酸铈铵的存在下，用丙烯腈接枝到 C. occidentalis 种子胶上。通过改变CAN、硝酸、丙烯腈的浓度、反应温度和时间来优化反应条件。使用FTIR、TGA、DTG、X射线和SEM分析表征接枝胶。在惰性气氛下，在硝酸铈铵的存在下，用丙烯腈对西洋种胶进行了研究。通过改变CAN、硝酸、丙烯腈的浓度、反应温度和时间来优化反应条件。使用FTIR、TGA、DTG、X射线和SEM分析表征接枝胶。在惰性气氛下，在硝酸铈铵的存在下，用丙烯腈对西洋种胶进行了研究。通过改变CAN、硝酸、丙烯腈的浓度、反应温度和时间来优化反应条件。使用FTIR、TGA、DTG、X射线和SEM分析表征接枝胶。