Starch is one of the most abundant biopolymers in nature and is widely utilized across various industries, including food, pharmaceuticals, textiles, and packaging. Its attractiveness stems from its renewability, biodegradability, versatility, and abundance in nature. However, native starches have limitations, including poor solubility, thermal instability, retrogradation, and susceptibility to enzymatic degradation. Despite the broad range of applications of starch, challenges persist in optimizing its modifications, addressing cost constraints, and ensuring regulatory compliance in food and pharmaceutical applications. These shortcomings necessitate modifications to enhance their physicochemical and functional properties. Additionally, recent trends indicate a shift towards bioengineered starches with enhanced functional properties, utilizing artificial intelligence for process optimization, and expanded applications in advanced biomaterials to achieve sustainable development goals. Thus, this review delves into the diverse sources of starch, highlighting extraction techniques and comparing their characteristics. Additionally, the review examines various modification strategies and discusses their effects on starch structure, gelation, and industrial applications. Recent advancements in dual-modification approaches, nanotechnology integration, and eco-friendly modification techniques have been examined in the context of sustainable development. Moreover, this review highlights the role of modified starch in various pharmaceutical applications, including drug delivery systems and bioadhesives, as well as its importance in biodegradable plastics, food packaging, wastewater treatment, and bioethanol production.
Puri et al. (Mon,) studied this question.
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