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Gao W, Liu J, Zhang P, Zeng XA, Han Z, Teng Y. Physicochemical, structural and functional properties of pomelo peel pectin extracted by combination of pulsed electric field and cellulase hydrolysis. Int J Biol Macromol 2024; 278:134469. [PMID: 39102911 DOI: 10.1016/j.ijbiomac.2024.134469] [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: 11/21/2023] [Revised: 07/17/2024] [Accepted: 08/02/2024] [Indexed: 08/07/2024]
Abstract
In this study, pectin extracted from pomelo peel was investigated using three different combination methods of pulsed electric field (PEF) and cellulase. Three action sequences were performed, including PEF treatment followed by enzymatic hydrolysis, enzymatic hydrolysis followed by PEF treatment, and enzymatic hydrolysis simultaneously treated by PEF. The three corresponding pectins were namely PEP, EPP and SP. The physiochemical, molecular structural and functional properties of the three pectins were determined. The results showed that PEP had excellent physiochemical properties, with the highest yield (12.08 %), total sugar (80.17 %) and total phenol content (38.20 %). The monosaccharide composition and FT-IR analysis indicated that the three pectins were similar. The molecular weights of PEP, EPP and SP were 51.13, 88.51 and 40.00 kDa, respectively. PEP showed the best gel properties, emulsification stability and antioxidant capacity among the three products, due to its high galacturonic acid and total phenol content, appropriate protein and low molecular weight. The mechanism of PEF-assisted cellulase hydrolysis of pomelo peel was also revealed by SEM analysis. These results suggested that PEF pretreatment was the best method, which not only improved the efficiency of enzymatic extraction, but also reduced resource waste and increased financial benefits.
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Affiliation(s)
- Wenhong Gao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Jiajing Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Peilin Zhang
- Guangdong Polytechnic Normal University, Guangzhou 510665, China
| | - Xin-An Zeng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Zhong Han
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yongxin Teng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
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Yang Z, Fan H, Li R, Li B, Fan J, Ge J, Xu X, Pan S, Liu F. Potential role of cell wall pectin polysaccharides, water state, and cellular structure on twice "increase-decrease" texture changes during kohlrabi pickling process. Food Res Int 2023; 173:113308. [PMID: 37803613 DOI: 10.1016/j.foodres.2023.113308] [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: 01/21/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 10/08/2023]
Abstract
Pickled kohlrabi is a traditional and favored vegetable product in China. During pickling, the hardness, springiness, and chewiness of kohlrabi all experienced a typical change with twice "increase-decrease" trend. However, little is known about its mechanism. In this study, in situ analysis including immunofluorescence, low field nuclear magnetic, and transmission electron microscopy were used to explore the effects of cell wall pectin, water state, and cellular structure on kohlrabi texture changes during pickling. Results revealed that at the early stage, due to the rapid loss of water after three times salting, the cells shrank and the interstitial space reduced, resulting in the first increase on kohlrabi texture. Subsequently, the dehydration-rehydration caused by the first brine processing resulted in the first decrease on kohlrabi texture. Then under the action of PME enzyme, more low-esterified pectin was produced, and chelate-soluble pectin with more branched structure was further formed, leading to another elevation of the sample texture. As the pickling continued, under the combined action of PG and PME, the molecular weight of pectin was decreased and the rigidity of the cell tissue was destroyed, caused kohlrabi texture continued to decline. These researches could provide important information and guidance for better maintaining the texture of pickled vegetables during processing.
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Affiliation(s)
- Zhixuan Yang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Hekai Fan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Ruoxuan Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Bowen Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Jiangtao Fan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Jinjiang Ge
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Xiaoyun Xu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Siyi Pan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China
| | - Fengxia Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China; Key Laboratory of Environment Correlative Dietology, Ministry of Education, PR China; Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control (Huazhong Agricultural University), Wuhan, Hubei, PR China.
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Sun Y, Liu Y, Li J, Yan S. Acetic Acid Immersion Alleviates the Softening of Cooked Sagittaria sagittifolia L. Slices by Affecting Cell Wall Polysaccharides. Foods 2023; 12:foods12030506. [PMID: 36766035 PMCID: PMC9914095 DOI: 10.3390/foods12030506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 01/25/2023] Open
Abstract
This study investigated the mechanism for acetic acid pretreatment to improve cell wall integrity and thereby enhance the hardness of cooked Sagittaria sagittifolia L. slices by affecting polysaccharides in the cell wall. Distilled water immersion and 0.6% acetic acid immersion (the solid/liquid ratio is 1:10) for 15 h at room temperature could result in the conversion of pectin through different reactions during thermal processing. Combined in situ and in vitro analysis demonstrated that acetic acid pretreatment could promote the interaction of cellulose microfiber or hemicellulose with RG-Ⅰ side chains during thermal processing of S. sagittifolia L. slices, promote the entanglement between linear pectin molecules and make hemicellulose show a lower molecular weight under cooking, making it easy to firmly bind to pectin, which resulted in texture changes. The findings may help improve the texture of thermally processed vegetables and fruits and deep processing of starchy vegetables.
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Affiliation(s)
- Yangyang Sun
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Yanzhao Liu
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
| | - Jie Li
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
- Aquatic Vegetable Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, China
| | - Shoulei Yan
- College of Food Science and Technology, Huazhong Agriculture University, Wuhan 430070, China
- Aquatic Vegetable Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, China
- Correspondence:
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Gong W, Zhao X, Manickam S, Liu X, Li D, Han Y, Kiani H, Feng C, Tao Y. Impact of cell wall adsorption behaviours on phenolic stability under air drying of blackberry with and without contact ultrasound assistance. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Moens LG, Van Wambeke J, De Laet E, Van Ceunebroeck JC, Goos P, Van Loey AM, Hendrickx ME. Effect of postharvest storage on potato (Solanum tuberosum L.) texture after pulsed electric field and thermal treatments. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Alpos M, Leong SY, Liesaputra V, Martin CE, Oey I. Understanding In Vivo Mastication Behaviour and In Vitro Starch and Protein Digestibility of Pulsed Electric Field-Treated Black Beans after Cooking. Foods 2021; 10:foods10112540. [PMID: 34828821 PMCID: PMC8622574 DOI: 10.3390/foods10112540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/27/2022] Open
Abstract
The aim of this study was to understand (i) the in vivo mastication behaviour of cooked black beans (chewing duration, texture perception, oral bolus particle size, microstructure, and salivary α-amylase) and (ii) the in vitro digestibility of starch and protein of in vivo-generated black bean oral bolus under simulated gastrointestinal condition. The beans were pre-treated using pulsed electric field (PEF) with and without calcium chloride (CaCl2) addition prior to cooking. The surface response model based on least square was used to optimise PEF processing condition in order to achieve the same texture properties of cooked legumes except for chewiness. In vivo mastication behaviour of the participants (n = 17) was characterized for the particle size of the resulting bolus, their salivary α-amylase activity, and the total chewing duration before the bolus was deemed ready for swallowing. In vitro starch and protein digestibility of the masticated bolus generated in vivo by each participant along the gastrointestinal phase were then studied. This study found two distinct groups of chewers—fast and slow chewers who masticated all black bean beans, on average, for <25 and >29 s, respectively, to achieve a bolus ready for swallowing. Longer durations of chewing resulted in boluses with small-sized particles (majorly composed of a higher number of broken-down cotyledons (2–5 mm2 particle size), fewer seed coats (5–13 mm2 particle size)), and higher activity of α-amylase. Therefore, slow chewers consistently exhibited a higher in vitro digestibility of both the starch and protein of processed black beans compared to fast chewers. Despite such distinct difference in the nutritional implication for both groups of chewers, the in vivo masticated oral bolus generated by fast chewers revealed that the processing conditions involving the PEF and addition of CaCl2 of black beans appeared to significantly (p < 0.05) enhance the in vitro digestibility of protein (by two-fold compared to untreated samples) without stimulating a considerable increase in the starch digestibility. These findings clearly demonstrated that the food structure of cooked black beans created through PEF treatment combined with masticatory action has the potential to modulate a faster hydrolysis of protein during gastrointestinal digestion, thus offering an opportunity to upgrade the quality of legume protein intake in the daily diet.
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Affiliation(s)
- Marbie Alpos
- Department of Food Science, University of Otago, Dunedin 9054, New Zealand; (M.A.); (S.Y.L.)
- Riddet Institute, Palmerston North 4442, New Zealand
| | - Sze Ying Leong
- Department of Food Science, University of Otago, Dunedin 9054, New Zealand; (M.A.); (S.Y.L.)
- Riddet Institute, Palmerston North 4442, New Zealand
| | - Veronica Liesaputra
- Department of Computer Science, University of Otago, Dunedin 9054, New Zealand;
| | - Candace E. Martin
- Department of Geology, University of Otago, Dunedin 9054, New Zealand;
| | - Indrawati Oey
- Department of Food Science, University of Otago, Dunedin 9054, New Zealand; (M.A.); (S.Y.L.)
- Riddet Institute, Palmerston North 4442, New Zealand
- Correspondence: ; Tel.: +64-3-479-8735
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