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Ma S, Jiang H. The effect of cold plasma on starch: Structure and performance. Carbohydr Polym 2024; 340:122254. [PMID: 38857998 DOI: 10.1016/j.carbpol.2024.122254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 04/26/2024] [Accepted: 05/09/2024] [Indexed: 06/12/2024]
Abstract
The inherent side effects of the physico-chemical properties of native starches often severely limit their use in food and non-food industries. Plasma is a non-thermal technology that allows rapid improvement of functional properties. This review provides a comprehensive summary of the sources and mechanisms of action of cold plasma and assesses its effects on starch morphology, crystal structure, molecular chain structure and physicochemical properties. The complex relationship between structure and function of plasma-treated starch is also explored. Potential applications of plasma-modified starch are also discussed in detail. The outcome of the modification process is influenced by factors such as starch type and concentration, plasma source, intensity and duration. The properties of starch can be effectively optimised using plasma technology. Plasma-based technologies therefore have the potential to modify starch to create a range of functionalities to meet the growing market demand for clean label ingredients.
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Affiliation(s)
- Shu Ma
- College of Food Science and Engineering, Northwest A & F University, Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, Yangling 712100, China
| | - Hao Jiang
- College of Food Science and Engineering, Northwest A & F University, Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, Yangling 712100, China.
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2
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He M, Wu X, Gao T, Chen L, Teng F, Li Y. Effects of ultrasonic and chemical dual modification treatments on the structural, and properties of cornstarch. Food Chem 2024; 451:139221. [PMID: 38688094 DOI: 10.1016/j.foodchem.2024.139221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/10/2024] [Accepted: 03/31/2024] [Indexed: 05/02/2024]
Abstract
This study aimed to explore the changes in the structural and functional properties of cornstarch modified by oxidation, esterification, and cross-linking under ultrasonic pretreatment. FT-IR and XRD characteristic peaks revealed successful access to chemical functional groups. Both ultrasonic and the three chemical treatments eroded the surface of starch granules, reducing their particle size and increasing their RC. Meanwhile, the destruction of the granules was further enhanced by the dual modification treatments. The ultrasonic pretreatment synergized and improved the swelling power, solubility, and translucency of all three chemical treatments. Further, it improved the poorer freeze-thaw stability of cross-linked starch, resulting in a lower water precipitation rate. In addition, both ultrasonic and chemical treatments significantly decreased RDS and SDS, and increased RS content. The ultrasonic-chemical dual modification had a synergistic effect on in vitro digestibility, resulting in a further increase in RS. In conclusion, this study provided ideas for developing new starch modification technology and deep processing of cornstarch, expanding its application areas and thus meeting the different needs of starch-based products.
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Affiliation(s)
- Mingyu He
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Xixi Wu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Tian Gao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Le Chen
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Fei Teng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Yang Li
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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3
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Kaur P, Annapure US. Rheological and gelling properties of atmospheric pressure cold plasma treated finger millet (Eleusine coracana) starch. Food Res Int 2024; 187:114418. [PMID: 38763668 DOI: 10.1016/j.foodres.2024.114418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 05/21/2024]
Abstract
Interest in exploring alternative starch sources like finger millet is rising due to wide starch applications. However, native starch often lacks desired qualities, including rheological properties. Modification is thus necessary for specific end uses. Plasma treatment as a greener and sustainable method for starch modification was therefore, studied for its ability to impact rheological properties of finger millet starch (FMS). Considerable changes in the rheological properties on FMS was noted, a significant decrease and increase (p < 0.05) in the peak viscosity (from 3.35 to 0.553 Pa.s) and paste clarity respectively was observed, indicating occurrence of depolymerization. However, intermediate plasma-treated samples (200 V) observed a decrease in paste clarity attributed to aggregate formation and cross-linking. Cross-linking was also confirmed by findings of frequency sweep where a continuous decrease in G' values of plasma treated FMS gel was interrupted by sudden increase. Despite depolymerization causing alteration of rheological behaviour such as decrease in shear thinning properties, gel strength observed a contradictory increase. This was attributed to incorporation of functional group and absence of shear responsible for network formation giving higher gel strength to FMS gels. This is elaborated in detail in the study. The study thus concluded that cold plasma significantly impacted all the rheological properties of the FMS and hence can prove to be beneficial for modification of starch rheological parameters.
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Affiliation(s)
- Parinder Kaur
- Department of Food Engineering Technology, Institute of Chemical Technology, Mumbai 400019, India
| | - Uday S Annapure
- Department of Food Engineering Technology, Institute of Chemical Technology, Mumbai 400019, India; Institute of Chemical Technology, Marathwada Campus, Jalna, India.
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4
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Ma S, Ma T, Tsuchikawa S, Inagaki T, Wang H, Jiang H. Effect of dielectric barrier discharge (DBD) plasma treatment on physicochemical and 3D printing properties of wheat starch. Int J Biol Macromol 2024; 269:132159. [PMID: 38719018 DOI: 10.1016/j.ijbiomac.2024.132159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/08/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
In recent years, the focus has shifted towards carbohydrate-based hydrogels and their eco-friendly preparation methods. This study involved an investigation into the treatment of wheat starch using dielectric barrier discharge (DBD) plasma technology over varying time gradients (0, 2, 5, 10, 15, and 20 min). The objective was to systematically examine the impact of different treatment durations on the physicochemical properties of wheat starch and the suitability of its gels for 3D printing. Morphology of wheat starch remained intact after DBD treatment. However, it led to a reduction in the amylose content, molecular weight, and crystallinity. This subsequently resulted in a decrease in the pasting temperature and viscosity. Moreover, the gels of the DBD-treated starch exhibited superior 3D printing performance. After a 2-min DBD treatment, the 3D printed samples of the wheat starch gel showed no significant improvements, as broken bars were evident on the surface of the 3D printed graphic, whereas DBD-20 showed better printing accuracy and surface structure, compared to the original starch without slumping. These results suggested that DBD technology holds potential for developing new starch-based gels with impressive 3D printing properties.
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Affiliation(s)
- Shu Ma
- Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China
| | - Te Ma
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa, Nagoya 464-8601, Japan
| | - Satoru Tsuchikawa
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa, Nagoya 464-8601, Japan
| | - Tetsuya Inagaki
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa, Nagoya 464-8601, Japan
| | - Han Wang
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa, Nagoya 464-8601, Japan
| | - Hao Jiang
- Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China; Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa, Nagoya 464-8601, Japan.
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5
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Kaur P, Annapure US. Understanding the atmospheric cold plasma-induced modification of finger millet (Eleusine coracana) starch and its related mechanisms. Int J Biol Macromol 2024; 268:131615. [PMID: 38631580 DOI: 10.1016/j.ijbiomac.2024.131615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 04/19/2024]
Abstract
This research was conducted to evaluate the effects of cold plasma (CP) on finger millet starch (FMS). FMS was exposed to partially ionized gas at varying voltages (170, 200, and 230 Volt) for varied time (10, 20, and 30 mins). The impact of treatment was studied using physico-chemical, and functional properties, and the mechanisms of starch modification occurring were stated. A significant reduction in the degree of polymerization was noticed based on parameters like reducing sugar, amylose content, solubility, and molecular weight. However, in certain voltage and time combinations, crosslinking was also confirmed by analysis such as XRD, FTIR, DSC, etc. The properties of starch were altered such as remarkable increase in water solubility by 6.7 times for highest voltage and longest time (230 V/30 min) was registered. NMR data suggested valuable findings- oxidation of OH group at C6 position of starch led to formation of carbonyl group followed by carboxyl group. NMR also showed a decrease in OH protons confirming crosslinking and hence all these analyses helped to conclude findings about the quality changes using CP. It was observed that the highest voltage and considerably longer exposure time of 20 and 30 min induced significant changes in the FMS.
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Affiliation(s)
- Parinder Kaur
- Department of Food Engineering Technology, Institute of Chemical Technology, Mumbai 400019, India
| | - Uday S Annapure
- Department of Food Engineering Technology, Institute of Chemical Technology, Mumbai 400019, India; Institute of Chemical Technology, Marathwada Campus, Jalna, India.
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Du Z, Li X, Zhao X, Huang Q. Multi-scale structural disruption induced by radio frequency air cold plasma accelerates enzymatic hydrolysis/ hydroxypropylation of tapioca starch. Int J Biol Macromol 2024; 260:129572. [PMID: 38253141 DOI: 10.1016/j.ijbiomac.2024.129572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/27/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
This study investigated the effects of radio frequency air cold plasma (RFACP) pretreatment on the multi-scale structures, physicochemical properties, enzymatic hydrolysis, and hydroxypropylation of tapioca starch. The results showed that cold plasma (CP) made starch granules rough on the surface and disrupted long- and short-range ordered structures, reducing relative crystallinity from 43.8 % to 37.4 % and R1047/1022 value from 0.992 to 0.934. Meanwhile, the starch molecules were depolymerized and oxidized by CP, reducing weight-average molecular weight from 9.64 × 107 to 2.17 × 107 g/mol, while increasing carbonyl and carboxyl groups by up to 118 % and 53 %. Additionally, CP-treated starches exhibited higher solubility and swelling power, along with lower gelatinization enthalpy. Short-time CP pretreatment (10 min) promoted the hydroxypropylation of starch and increased the molar substitution (0.081-0.112). Also, CP pretreatment accelerated enzymatic hydrolysis of starch, as indicated by the increase in hydrolysis rate (1.846 × 10-3-2.033 × 10-3 min-1) and degree of hydrolysis (51.45 % - 59.92 %). Overall, the multi-scale structural disruption induced by CP treatment facilitated the accessibility of enzymes/chemical reagents into starch granules and glucan chains. This study suggested that RFACP could be used for starch pretreatment to increase production efficiency in modified starch production, as well as in brewing and fermentation industries.
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Affiliation(s)
- Zhixiang Du
- College of Food Science and Technology, MOE Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xuxu Li
- College of Food Science and Technology, MOE Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoyun Zhao
- College of Food Science and Technology, MOE Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qilin Huang
- College of Food Science and Technology, MOE Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan 430070, China.
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Gupta RK, Guha P, Srivastav PP. Effect of high voltage dielectric barrier discharge (DBD) atmospheric cold plasma treatment on physicochemical and functional properties of taro (Colocasia esculenta) starch. Int J Biol Macromol 2023; 253:126772. [PMID: 37683744 DOI: 10.1016/j.ijbiomac.2023.126772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 07/27/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
The goal of the proposed study is to investigate the effects of three different power levels (30, 32 and 34 kV) and exposure time (2, 4 and 8 min) of dielectric barrier discharge (DBD) atmospheric cold plasma treatment on the functional and physicochemical characteristics of taro starch. Investigations were done into how different treatments impact the multi-structural, functional and physicochemical attributes of taro starch. The findings showed that cold plasma treatments substantially impacted starch granule shapes (3.60-2.54 μm), such as reduced aggregations and developed fissures on granule surface due to the generation of an etching by plasma species and enhancement in the surface topography and roughness of treated starch as compared with native by SEM and AFM analysis. Besides this, no variations were detected in the functional groups of taro starch using FT-IR analysis after cold plasma treatments. However, the A-type pattern in the XRD did not affect it, while a reduction in relative crystallinity (14.20-11.50 %) was seen as a function of the active plasma species depolymerization. Furthermore, depending on the cold plasma voltage and treatment time, amylose content (20.12-15.98 %), paste clarity (24.48-31.27 %), solubility (0.41-65.53 %), freezing thaw stability (% syneresis) (32.10-42.58 %), color properties (L*, 94.79-97.52), whiteness index (79.37-84.66), molecular weight distribution (Peak 1, 12.79-5.35 × 108 g/mol; Peak 2, 4.20-1.56 × 107 g/mol) and in vitro digestibility (RDS, 64.10-64.08 %) significantly changed. So, based on these excellent properties, this study suggested that cold plasm-treated taro starch can be used in the field of food packaging material, functional food and pharmaceutical products. Therefore, a potential approach for physically altering starch is plasma treatment.
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Affiliation(s)
- Rakesh Kumar Gupta
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India.
| | - Proshanta Guha
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Prem Prakash Srivastav
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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