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Yan Y, Fang J, Zhu X, Ji X, Shi M, Niu B. Effect of extrusion using plasma-activated water on the structural, physicochemical, antioxidant and in vitro digestive properties of yam flour. Food Chem 2024; 460:140687. [PMID: 39106813 DOI: 10.1016/j.foodchem.2024.140687] [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: 05/12/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/09/2024]
Abstract
The synergistic effects of plasma-activated water (PAW) and twin-screw extrusion (TSE) on the structural, physicochemical, antioxidant, and digestive properties of yam flour (YF) were studied. Compared to common TSE, PAW-TSE reduced the protein, starch, and polyphenol contents, swelling power, and gel property of YF, while PAW-TSE enhanced the flavonoid content, whiteness index, solubility, and antioxidant property of YF. Moreover, the results of structural characterization and differential scanning calorimetry indicated that the long-range or short-range ordering, and gelatinization enthalpy of starch in YF were reduced after PAW-TSE, while the structure ordering of proteins in YF increased. Furthermore, the in vitro digestibility results demonstrated a reduction in the rate of enzymatic hydrolysis, coupled with an increase in total contents of slowly digestible and resistant starch after PAW-TSE. It should be noted that TSE using PAW prepared by a longer plasma treatment resulted in a more significant improvement effect on YF.
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Affiliation(s)
- Yizhe Yan
- College of Food and Bioengineering, Zhengzhou R&D Center for High-Quality Innovation of Green Food (Green Premium Agricultural Products), Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; National & Local Joint Engineering Research Center of Cereal-Based Foods (Henan), Zhengzhou 450001, PR China.
| | - Jiao Fang
- College of Food and Bioengineering, Zhengzhou R&D Center for High-Quality Innovation of Green Food (Green Premium Agricultural Products), Zhengzhou University of Light Industry, Zhengzhou 450001, PR China
| | - Xiaopei Zhu
- College of Food and Bioengineering, Zhengzhou R&D Center for High-Quality Innovation of Green Food (Green Premium Agricultural Products), Zhengzhou University of Light Industry, Zhengzhou 450001, PR China
| | - Xiaolong Ji
- College of Food and Bioengineering, Zhengzhou R&D Center for High-Quality Innovation of Green Food (Green Premium Agricultural Products), Zhengzhou University of Light Industry, Zhengzhou 450001, PR China
| | - Miaomiao Shi
- College of Food and Bioengineering, Zhengzhou R&D Center for High-Quality Innovation of Green Food (Green Premium Agricultural Products), Zhengzhou University of Light Industry, Zhengzhou 450001, PR China
| | - Bin Niu
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450000, PR China.
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2
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Qin W, Qiu Y, He H, Guo B, Li P. Pyrogallic acid-compatibilized polylactic acid/thermoplastic starch blend produced via one-step twin-screw extrusion. Int J Biol Macromol 2024; 276:133758. [PMID: 38992550 DOI: 10.1016/j.ijbiomac.2024.133758] [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: 03/26/2024] [Revised: 06/28/2024] [Accepted: 07/07/2024] [Indexed: 07/13/2024]
Abstract
In this study, a one-step extrusion method is proposed to prepare blended polylactic acid (PLA)/thermoplastic starch (TPS) using a novel plant-derived compatibilizer, pyrogallic acid (PGA), to enhance the PLA/TPS compatibility. The effects of PGA on the mechanical behavior, fractured cross-section morphology, thermal and dynamic mechanical performance, and water resistance of PLA/TPS blends were systematically studied. Results demonstrate that the addition of PGA effectively improves the compatibility between TPS and PLA, resulting in enhanced tensile strength, crystallinity, elongation at break, thermal stability, and hydrophobicity of the blends. Specifically, incorporating 1.5 phr of PGA into the blend system yields the highest values for tensile strength (23.38 MPa) and elongation at break (16.96 %), which are 24.7 % and 233.2 %, respectively, higher than those observed for pure PLA/TPS blends. Furthermore, other properties exhibit obvious improvements upon incorporation of PGA into the blends. This approach provides a promising strategy for enhancing the performance of PLA/TPS blends and expanding their applications in food packaging, agricultural film, etc.
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Affiliation(s)
- Wenbo Qin
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Yongkang Qiu
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Huan He
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Bin Guo
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Post-Doctoral Research Center of Nanjiecun Group, Luohe, Henan 462600, China.
| | - Panxin Li
- Post-Doctoral Research Center of Nanjiecun Group, Luohe, Henan 462600, China
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3
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Zeng F, Guo H, Liu G. Processing and Utilization Technology of Root and Tuber Food. Foods 2024; 13:2082. [PMID: 38998588 PMCID: PMC11241594 DOI: 10.3390/foods13132082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 06/22/2024] [Indexed: 07/14/2024] Open
Abstract
Roots and tubers make a great contribution to major staple foods and provide good sources of dietary carbohydrates for the nutrition supply and energy recharge of human [...].
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Affiliation(s)
- Fankui Zeng
- Research Center for Natural Medicine and Chemical Metrology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huachun Guo
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650000, China
| | - Gang Liu
- Research Center for Natural Medicine and Chemical Metrology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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4
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Zhang D, Kishimoto N. Quantum Chemical Investigation into the Structural Analysis and Calculated Raman Spectra of Amylose Modeled with Linked Glucose Molecules. Molecules 2024; 29:2842. [PMID: 38930907 PMCID: PMC11206574 DOI: 10.3390/molecules29122842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
This study presents a quantum chemical investigation into the structural analysis and calculated Raman spectra of modeled amylose with varying units of linked glucose molecules. We systematically examined the rotation of hydroxymethyl groups and intramolecular hydrogen bonds within these amylose models. Our study found that as the number of linked glucose units increases, the linear structure becomes more complex, resulting in curled, cyclic, or helical structures facilitated by establishing various intramolecular interactions. The hydroxymethyl groups were confirmed to form interactions with oxygen atoms and with hydroxymethyl and hydroxyl groups from adjacent rings in the molecular structures. We identified distinct peaks and selected specific bands applicable in various analytical contexts by comparing their calculated Raman spectra. Representative vibrational modes within selected regions were identified across the different lengths of amylose models, serving as characteristic signatures for linear and more coiled structural conformations. Our findings contribute to a deeper understanding of amylose structures and spectroscopic signatures, with implications for theoretical studies and potential applications. This work provides valuable reference points for the detailed assignment of Raman peaks of amylose structure, facilitating their application in broader research on carbohydrate structures and their associated spectroscopic properties.
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Affiliation(s)
| | - Naoki Kishimoto
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan;
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5
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Roohi R, Abedi E, Hashemi SMB, Akbari M. Effect of ultrasound geometry on the production efficiency of damaged starch: Determining rheology parameters, and non-isothermal reaction kinetics. ULTRASONICS SONOCHEMISTRY 2024; 106:106882. [PMID: 38669798 PMCID: PMC11061339 DOI: 10.1016/j.ultsonch.2024.106882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024]
Abstract
Present study investigates the effects of probe size geometry on thermodynamic kinetics, rheology, and microstructure of wheat and tapioca starch. Ultrasound treatment using different probe diameters (20 mm and 100 mm) significantly influenced the gelatinization process. Results showed reduced enthalpy (ΔH) and Gibbs energy (ΔG), indicating enhanced gelatinization efficiency. According to the results, using a 20 mm and 100 mm probe leads to a reduction of 52.7 % and 68.6 % in reaction enthalpy for wheat starch compared to native starch, respectively. Microstructure analysis revealed structural changes, with ultrasound treatment leading to granular fractures and a sheet-like structure with air bubbles. The rheological behavior of the starches is found to exhibit shear thinning behavior, with the Casson model providing the best fit for the experimental data. Moreover, rheology modeling using Herschel-Bulkley and power law models showed increased viscosity and shear stress in larger probes. Numerical simulation data demonstrated that probe size influenced ultrasonic pressure, sound pressure level, and thermal power dissipation density, affecting fluid motion and velocity field components. Moreover, the maximum dissipated power decreases from 8.43 to 0.655 mW/m3 with an increase in probe diameter from 20 to 100 mm. The average yield shear stress values are calculated as 3.36 and 3.14 for wheat and tapioca starches, respectively. The larger probe diameter leads to greater entropy increases, with tapioca starch showing a 4.72 % increase and wheat starch a 4.97 % increase, compared to 2.56 % and 3.11 %, respectively, with the smaller probe. Additionally, the Keller-Miksis model provided insights into bubble dynamics, revealing increased pressure and temperature with higher pressure amplitudes.
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Affiliation(s)
- Reza Roohi
- Department of Mechanical Engineering, Faculty of Engineering, Fasa University, Fasa, Iran
| | - Elahe Abedi
- Department of Food Science and Technology, Faculty of Agriculture, Fasa University, Fasa, Iran.
| | | | - Masoud Akbari
- Department of Mechanical Engineering, Faculty of Engineering, Fasa University, Fasa, Iran
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6
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Braşoveanu M, Sabbaghi H, Ticoș D, Dumitru M, Sunooj KV, Sher F, Nemţanu MR. Enhancing starch functionality through synergistic modification via sequential treatments with cold plasma and electron beam irradiation. Int J Biol Macromol 2024; 270:132346. [PMID: 38750859 DOI: 10.1016/j.ijbiomac.2024.132346] [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: 02/26/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/19/2024]
Abstract
The impact of dual sequential modifications using radio-frequency (RF) plasma and electron beam irradiation (EBI) on starch properties was investigated and compared with single treatments within an irradiation dose range of 5-20 kGy. Regardless of sequence, dual treatments synergistically affected starch properties, increasing acidity, solubility, and paste clarity, while decreasing rheological features with increasing irradiation dose. The molecular weight distribution was also synergistically influenced. Amylopectin distribution broadened particularly below 10 kGy. Amylose narrowed its distribution across all irradiation doses. This was due to dominating EBI-induced degradation and molecular rearrangements from RF plasma. With the highest average radiation-chemical yield (G) and degradation rate constant (k) of (2.12 ± 0.14) × 10-6 mol·J-1 and (3.43 ± 0.23) × 10-4 kGy-1, respectively, upon RF plasma pre-treatment, amylose underwent random chain scission. In comparison to single treatments, dual modification caused minor alterations in spectral characteristics and crystal short-range order structure, along with increased granule aggregation and surface irregularities. The synergistic effect was dose-dependent, significant up to 10 kGy, irrespective of treatment sequence. The highest synergistic ratio was observed when RF plasma preceded irradiation, demonstrating the superior efficiency of plasma pre-treatment in combination with EBI. This synergy has the potential to lower costs and extend starch's technological uses by enhancing radiation sensitivity and reducing the irradiation dose.
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Affiliation(s)
- Mirela Braşoveanu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor St., PO Box MG-36, 077125 Măgurele, Romania
| | - Hassan Sabbaghi
- Department of Food Science and Technology, Faculty of Agriculture and Animal Science, University of Torbat-e Jam, Torbat-e Jam, Razavi Khorasan Province, Iran
| | - Dorina Ticoș
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor St., PO Box MG-36, 077125 Măgurele, Romania
| | - Marius Dumitru
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor St., PO Box MG-36, 077125 Măgurele, Romania
| | | | - Farooq Sher
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom
| | - Monica R Nemţanu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor St., PO Box MG-36, 077125 Măgurele, Romania.
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7
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Elgharbawy AS, El Demerdash AGM, Sadik WA, Kasaby MA, Lotfy AH, Osman AI. Synthetic Degradable Polyvinyl Alcohol Polymer and Its Blends with Starch and Cellulose-A Comprehensive Overview. Polymers (Basel) 2024; 16:1356. [PMID: 38794547 PMCID: PMC11124784 DOI: 10.3390/polym16101356] [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: 04/19/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Approximately 50% of global plastic wastes are produced from plastic packaging, a substantial amount of which is disposed of within a few minutes of its use. Although many plastic types are designed for single use, they are not always disposable. It is now widely acknowledged that the production and disposal of plastics have led to a plethora of negative consequences, including the contamination of both groundwater and soil resources and the deterioration of human health. The undeniable impact of excessive plastic manufacturing and waste generation on the global plastic pollution crisis has been well documented. Therefore, degradable polymers are a crucial solution to the problem of the non-degradation of plastic wastes. The disadvantage of degradable polymers is their high cost, so blending them with natural polymers will reduce the cost of final products and maximize their degradation rate, making degradable polymers competitive with industrial polymers that are currently in use daily. In this work, we will delineate various degradable polymers, including polycaprolactone, starch, and cellulose. Furthermore, we will elucidate several aspects of polyvinyl alcohol (PVA) and its blends with natural polymers to show the effects of adding natural polymers on PVA properties. This paper will study cost-effective and ecologically acceptable polymers by combining inexpensive natural polymers with readily accessible biodegradable polymers such as polyvinyl alcohol (PVA).
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Affiliation(s)
- Abdallah S. Elgharbawy
- Materials Science Department, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, Shatby, P.O. Box 832, Alexandria 21526, Egypt; (A.S.E.)
- The Egyptian Ethylene and Derivatives Company (Ethydco), Alexandria 21544, Egypt
| | - Abdel-Ghaffar M. El Demerdash
- Materials Science Department, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, Shatby, P.O. Box 832, Alexandria 21526, Egypt; (A.S.E.)
| | - Wagih A. Sadik
- Materials Science Department, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, Shatby, P.O. Box 832, Alexandria 21526, Egypt; (A.S.E.)
| | - Mosaad A. Kasaby
- Materials Science Department, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, Shatby, P.O. Box 832, Alexandria 21526, Egypt; (A.S.E.)
| | - Ahmed H. Lotfy
- Materials Science Department, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, Shatby, P.O. Box 832, Alexandria 21526, Egypt; (A.S.E.)
| | - Ahmed I. Osman
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland, UK
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8
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Saxby SM, Dong L, Ho KKHY, Lee CN, Wall M, Li Y. Nutritional, physicochemical, and functional properties of Hawaiian taro (Colocasia esculenta) flours: A comparative study. J Food Sci 2024; 89:2629-2644. [PMID: 38578118 DOI: 10.1111/1750-3841.17053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 04/06/2024]
Abstract
Taro (Colocasia esculenta) flour is a viable carbohydrate alternative and a functional additive for food formulation; however, different taro varieties may possess distinct characteristics that may influence their suitability for food production. This study evaluated the nutritional, physicochemical, and functional properties of flours from five Hawaiian taro varieties: Bun-Long, Mana Ulu, Moi, Kaua'i Lehua, and Tahitian. Tahitian, Bun-long, and Moi had high total starch contents of 40.8, 38.9, and 34.1 g/100 g, respectively. Additionally, Moi had the highest neutral detergent fiber (25.5 g/100 g), lignin (1.39 g/100 g), and cellulose (5.31 g/100 g). In terms of physicochemical properties, Tahitian showed the highest water solubility index (33.3 g/100 g), while Tahitian and Moi exhibited the two highest water absorption indices (5.81 g/g and 5.68 g/g, respectively). Regarding functional properties, Tahitian had the highest water absorption capacity (3.48 g/g), and Tahitian and Moi had the two highest oil absorption capacities (3.15 g/g and 2.68 g/g, respectively). Therefore, the flours from these Hawaiian taro varieties possess promising characteristics that could enhance food quality when used as alternative additives in food processing.
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Affiliation(s)
- Solange M Saxby
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
- Community and Family Medicine Department, Dartmouth Health, Lebanon, New Hampshire, USA
| | - Lianger Dong
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
- School of Life Sciences, Shanghai University, Baoshan, Shanghai, China
| | - Kacie K H Y Ho
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
| | - Chin N Lee
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
| | - Marisa Wall
- Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, Hawaii, USA
| | - Yong Li
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
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9
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Shad M, Rehman HM, Akhtar MW, Sajjad M. Structural and functional insights of starch processing α-amylase from hyperthermophilic archaeon Pyrococcusabyssi. Carbohydr Res 2024; 539:109122. [PMID: 38657354 DOI: 10.1016/j.carres.2024.109122] [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: 01/19/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
The genomic screening of hyper-thermophilic Pyrococcus abyssi showed uncharacterized novel α-amylase sequences. Homology modelling analysis revealed that the α-amylase from P. abyssi consists of an N-terminal GH57 catalytic domain, α-amylase central, and C-terminal domain. Current studies emphasize in-silico structural and functional analysis, recombinant expression, characterization, structural studies through CD spectroscopy, and ligand binding studies of the novel α-amylase from P. abyssi. The soluble expression of PaAFG was observed in the E. coli Rosetta™ (DE3) pLysS strain upon incubation overnight at 18 °C in an orbital shaker. The optimum temperature and pH of the PaAFG were observed at 90 °C in 50 mM phosphate buffer pH 6. The Km value for PaAFG against wheat starch was determined as 0.20 ± 0.053 mg while the corresponding Vmax value was 25.00 ± 0.67 μmol min-1 mg-1 in the presence of 2 mM CaCl2 and 12.5 % glycerol. The temperature ramping experiments through CD spectroscopy reveal no significant change in the secondary structures and positive and negative ellipticities of the CD spectra showing the proper folding and optimal temperature of PaAFG protein. The RMSD and RMSF of the PaAFG enzyme determined through molecular dynamic simulation show the significant protein's stability and mobility. The soluble production, thermostability and broad substrate specificity make this enzyme a promising choice for various industrial applications.
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Affiliation(s)
- Mohsin Shad
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, P.O. 54590, Lahore, Pakistan; Structural Biology, The Rosalind Franklin Institute, Harwell Science & Innovation Campus, Didcot, OX11 0QS, United Kingdom
| | - Hafiz Muzzammel Rehman
- School of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, P.O. 54590, Lahore, Pakistan
| | - Muhammad Waheed Akhtar
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, P.O. 54590, Lahore, Pakistan
| | - Muhammad Sajjad
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, P.O. 54590, Lahore, Pakistan.
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10
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Majeed F, Razzaq A, Rehmat S, Azhar I, Mohyuddin A, Rizvi NB. Enhanced dye sequestration with natural polysaccharides-based hydrogels: A review. Carbohydr Polym 2024; 330:121820. [PMID: 38368085 DOI: 10.1016/j.carbpol.2024.121820] [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: 11/19/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 02/19/2024]
Abstract
Due to the expansion of industrial activities, the concentration of dyes in water has been increasing. The dire need to remove these pollutants from water has been heavily discussed. This study focuses on the reproducible and sustainable solution for wastewater treatment and dye annihilation challenges. Adsorption has been rated the most practical way of the several decolorization procedures due to its minimal initial investment, convenient utility, and high-performance caliber. Hydrogels, which are three-dimensional polymer networks, are notable because of their potential to regenerate, biodegrade, absorb bulky amounts of water, respond to stimuli, and have unique morphologies. Natural polysaccharide hydrogels are chosen over synthetic ones because they are robust, bioresorbable, non-toxic, and cheaply accessible. This study has covered six biopolymers, including chitosan, cellulose, pectin, sodium alginate, guar gum, and starch, consisting of their chemical architecture, origins, characteristics, and uses. The next part describes these polysaccharide-based hydrogels, including their manufacturing techniques, chemical alterations, and adsorption effectiveness. It is deeply evaluated how size and shape affect the adsorption rate, which has not been addressed in any prior research. To assist the readers in identifying areas for further research in this subject, limitations of these hydrogels and future views are provided in the conclusion.
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Affiliation(s)
- Fiza Majeed
- Department of Chemistry, University of Narowal, Narowal 51600, Pakistan
| | - Ammarah Razzaq
- Department of Chemistry, University of Narowal, Narowal 51600, Pakistan
| | - Shabnam Rehmat
- Department of Chemistry, University of Narowal, Narowal 51600, Pakistan; School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | - Irfan Azhar
- Department of Chemistry and Research Center for Chemical Biology and Omics Analysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Abrar Mohyuddin
- Department of Chemistry, The Emerson University Multan, Multan 60000, Pakistan
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11
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Ribeiro VHDA, Cavalcanti-Mata MERM, Almeida RLJ, Silva VMDA. Characterization and Evaluation of Heat-Moisture-Modified Black and Red Rice Starch: Physicochemical, Microstructural, and Functional Properties. Foods 2023; 12:4222. [PMID: 38231608 DOI: 10.3390/foods12234222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 01/19/2024] Open
Abstract
This study sought to evaluate starch from black and red rice modified by heat-moisture, investigating the extraction yield, starch and amylose content, color, and phenolic compounds. The water and oil absorption capacity, whole milk and zero lactose absorption index, syneresis index, and texture were also analyzed. Microstructural analysis included Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The heat-moisture treatment (HMT) reduced the extraction yield and the starch and amylose content, with native black rice starch having the highest values for these parameters. The modification also affected the color and phenolic compounds of the starch, making it darker and changing its appearance. The modification improved the absorption of water, oil, and milk, reducing syneresis and increasing stability during storage. The starch surface was altered, especially for modified black rice starch, with larger agglomerates. The type of starch also changed from A to Vh, with lower relative crystallinity. The textural properties of modified red rice starch were also significantly altered. The HMT proved to be a viable and economical option to modify the analyzed parameters, influencing the texture and physicochemical properties of pigmented rice starch, expanding its applications, and improving its stability during storage at temperatures above 100 °C.
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