Modified starches play a pivotal role in elevating the performance of starch-based films, offering a myriad of advantages in diverse applications. Noteworthy examples include hydroxypropylated starch, cross-linked starch, a gelatin/hydroxypropyl starch/plasticizer blend, and acetylated starches. Packaging Advantages of Hydroxypropylated Starch Films Hydroxypropylated starch films exhibit superior attributes for packaging applications. These films, facilitated by a […]
Utilizing a singular method for chemical starch modification can enhance specific functional properties, yet it may inadvertently compromise other desirable traits. Embracing dual modifications has emerged as a promising avenue, with the sequencing of these alterations proving pivotal in shaping starch properties (Hazarika & Sit, 2016). Hazarika and Sit’s Groundbreaking Taro Starch Experiment In a […]
Starches can be physically modified through moist heat treatment and annealing, resulting in heat-moisture-treated starches (HMT starch) and annealed starch. HMT starch has a higher gelatinization temperature, less granule swelling, and less amylose leaching than native starches due to increased thermal stability. Annealing involves heat and water treatment at low temperatures and high water to […]
Unlocking Starch Potential: Exploring Modifications for Enhanced Properties The structural modifications of starch can profoundly impact its final properties. Here, we delve into various types of alterations and their effects on starch characteristics. Acetylation/Esterification: Surface Modification: Cross-linking: Oxidation: Acid Hydrolysis: Enzymatic Hydrolysis: Understanding these modifications offers insights into tailoring starch for specific applications, from improved […]
Scaling up thermoplastic starch (TPS) extrusion introduces challenges akin to those encountered in various industrial processes. Key issues include: In scaling up single-screw extruders, considerations must be given to thermal factors. Adiabatic processes, where there is no heat loss or gain, maintain consistent energy input per material amount. Achieving absolute thermal similarity involves adjusting the […]
The landscape of starch production has undergone a profound transformation, with the advancements in biological and genetic engineering technology emerging as the primary drivers of industrial progress. Tailoring starch properties to meet specific application demands has become a reality, thanks to these cutting-edge technologies. Biological Technology Unleashed: Crafting Tailored Starch Variants Biological technology takes the […]
In the dynamic world of starch processing, researchers have uncovered a realm of possibilities by manipulating temperature, pressure, humidity, and shear forces, as highlighted by the groundbreaking work of Eliasson and Gudmundsson (1996) and Bao et al. (2003). Physical Transformation Without Chemicals Unlike chemical modifications, physical alterations to starch involve changing its molecular structure without […]
Starch, a ubiquitous and abundant natural polymer, serves as a promising candidate for packaging materials. However, the inherent challenges associated with its structural changes over time have spurred innovative approaches to tailor its properties. Chemical modifications, achieved through diverse methodologies, emerge as a transformative avenue to harness the full potential of starch in the realm […]
Native starches have limitations such as low tolerance to processing conditions, excess viscosity, and pH sensitivity. Modifying starches through physical, chemical, and enzymatic processes can overcome these limitations. Thermoplastic starch has poor water resistance, which limits its applications. Chemical modifications, such as esterification, etherization, and oxidation, can effectively overcome this drawback. Starches can be modified […]