Influence of Cold Plasma Intensity on the Enzymatic Susceptibility, Physicochemical, Morphostructural, Thermal, and Rheological Properties of Chickpea Starch (Cicer arietinum)
Raphael Lucas Jacinto Almeida, Newton Carlos Santos, Shênia Santos Monteiro, João Vítor Fonseca Feitoza, Jessica Renaly Fernandes Morais, Raphael da Silva Eduardo, André Miranda da Silva, Cecilia Elisa Sousa Muniz, Matheus Augusto de Bittencourt Pasquali, Mércia Mélo de Almeida Mota, Gabriel Monteiro da Silva, Rebeca de Almeida Silva, Eliane de Sousa Costa, Artur Xavier Mesquita de Queiroga, Gilsandro Alves da Costa
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引用次数: 0
Abstract
This study evaluated the effect of cold plasma (CP) treatment time on the enzymatic susceptibility and physicochemical, morphostructural, thermal, and rheological properties of chickpea starch. Treatments were applied at 14 kV and 0.8 A for 3, 6, and 9 min (CP3, CP6, CP9). CP treatment significantly increased slowly digestible starch (up to 33.15%) and resistant starch (up to 54.14%), especially after prolonged exposure (CP9). Structural changes included reduced amylose content (29.42%) and relative crystallinity (24.02%), with no alteration in the type C crystallinity pattern or molecular order. The average particle size increased with treatment time, contributing to higher viscosity and more pronounced pseudoplastic behavior. Gelatinization temperatures were significantly reduced, particularly in CP6 and CP9, indicating lower thermal stability. Solubility increased in CP3 (4.33%) and CP6 (4.51%), suggesting disruption of starch granule integrity. CP9 also showed decreased enthalpy of gelatinization (5.53 J/g), consistent with partial molecular disorganization. Overall, CP proved to be an effective non-thermal technology to modify chickpea starch by enhancing its functional properties, making it suitable for low-glycemic and thickening food applications.
期刊介绍:
Biophysical studies of foods and agricultural products involve research at the interface of chemistry, biology, and engineering, as well as the new interdisciplinary areas of materials science and nanotechnology. Such studies include but are certainly not limited to research in the following areas: the structure of food molecules, biopolymers, and biomaterials on the molecular, microscopic, and mesoscopic scales; the molecular basis of structure generation and maintenance in specific foods, feeds, food processing operations, and agricultural products; the mechanisms of microbial growth, death and antimicrobial action; structure/function relationships in food and agricultural biopolymers; novel biophysical techniques (spectroscopic, microscopic, thermal, rheological, etc.) for structural and dynamical characterization of food and agricultural materials and products; the properties of amorphous biomaterials and their influence on chemical reaction rate, microbial growth, or sensory properties; and molecular mechanisms of taste and smell.
A hallmark of such research is a dependence on various methods of instrumental analysis that provide information on the molecular level, on various physical and chemical theories used to understand the interrelations among biological molecules, and an attempt to relate macroscopic chemical and physical properties and biological functions to the molecular structure and microscopic organization of the biological material.