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Qing S, Long Y, Wu Y, Shu S, Zhang F, Zhang Y, Yue J. Hot-air-assisted radio frequency blanching of broccoli: heating uniformity, physicochemical parameters, bioactive compounds, and microstructure. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2664-2674. [PMID: 36647340 DOI: 10.1002/jsfa.12458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Vegetables are often blanched before drying. The hot-water blanching (HWB) of broccoli reduces quality and is environmentally harmful. In this work, hot-air-assisted radio frequency heating blanching (HA-RFB) of broccoli was developed for use before further drying processes. Blanching sufficiency, heating uniformity, and heating rate during HA-RFB were investigated to improve the product's physicochemical properties and texture. Suitable heating conditions were achieved when HA-RFB was applied with hot air at 70 °C, with an electrode gap of 10.7 cm, using a cylindrical container for the broccoli. RESULTS Under these conditions, the relative peroxidase activity in broccoli decreased to 3.26% within 117 s, with 13.45% of weight loss. In comparison with HWB broccoli, the products blanched by HA-RFB preserved their texture, bioactive compounds, and microstructure better. The ascorbic acid, sulforaphane, and total glucosinolate content in HA-RFB products were 251.1%, 131.9% and 36.7% higher than those in HWB broccoli, and HA-RFB treatment led to a greater weight loss (13.45 ± 0.50%) than HWB (8.70 ± 1.70%), which is very helpful for the subsequent drying process. CONCLUSION This study demonstrated that HA-RFB could be a promising substitute for HWB to blanch broccoli and other flower vegetables, especially as a pretreatment in the drying process. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Shuting Qing
- Bor S. Luh Food Safety Research Center, College of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture and Rural Affairs, SJTU-OSU Innovation Center for Food Control and Environmental Sustainability, Shanghai Jiao Tong University, Shanghai, China
| | - Yangyang Long
- Bor S. Luh Food Safety Research Center, College of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture and Rural Affairs, SJTU-OSU Innovation Center for Food Control and Environmental Sustainability, Shanghai Jiao Tong University, Shanghai, China
| | - Yiwen Wu
- Bor S. Luh Food Safety Research Center, College of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture and Rural Affairs, SJTU-OSU Innovation Center for Food Control and Environmental Sustainability, Shanghai Jiao Tong University, Shanghai, China
| | - Shumin Shu
- Kangshi (Shanghai) Food Science and Technology Co., Ltd, Shanghai, China
| | - Fei Zhang
- Kangshi (Shanghai) Food Science and Technology Co., Ltd, Shanghai, China
| | - Yan Zhang
- Kangshi (Shanghai) Food Science and Technology Co., Ltd, Shanghai, China
| | - Jin Yue
- Bor S. Luh Food Safety Research Center, College of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture and Rural Affairs, SJTU-OSU Innovation Center for Food Control and Environmental Sustainability, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Jiao Tong University Sichuan Research Institute, Chengdu, China
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Mi S, Li T, Shi Q, Zhu W, Wang X. Cold shock precooling improves the firmness of chili pepper during postharvest storage and the molecular mechanisms related to pectin. Food Chem 2023; 419:136052. [PMID: 37015167 DOI: 10.1016/j.foodchem.2023.136052] [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: 01/03/2023] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 04/06/2023]
Abstract
This research was conducted to explore the influence of cold shock on the firmness, a quality marker in chili pepper during 0-21 d storage and determine mechanism by cold shock impacted pectin. Chili peppers were exposed to cold shock precooling (0 ± 2 °C water/ice mixture) for 0-, 30-, 90- and 150-min, respectively. Results showed that cold shock alleviated loss of firmness throughout storage. Firmness was positively associated with sodium carbonate-soluble pectin content (r = 0.44), methylation degree of CDTA-soluble pectin (r = 0.82) and water-soluble pectin (WSP, r = 0.87), but negatively associated with WSP content (r = -0.76), and the activities of β-galactosidase (r = -0.72) and pectinlyase (r = -0.74). Cold shock for 90 min was determined to be optimal. This study confirms the applicability of cold shock precooling to maintain firmness and thereby to extend the shelf life of chili pepper.
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Affiliation(s)
- Si Mi
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Tong Li
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Quanying Shi
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Wenxuan Zhu
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Xianghong Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, China.
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3
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Food and fruit waste valorisation for pectin recovery: Recent process technologies and future prospects. Int J Biol Macromol 2023; 235:123929. [PMID: 36882142 DOI: 10.1016/j.ijbiomac.2023.123929] [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: 11/28/2022] [Revised: 01/17/2023] [Accepted: 03/01/2023] [Indexed: 03/09/2023]
Abstract
Pectin possesses a dual property of resistance and flexibility and thus has diverse commercial value which has generated research interest on this versatile biopolymer. Formulated products using pectin could be useful in food, pharma, foam, plasticiser and paper substitute industries. Pectin is structurally tailor-made for greater bioactivity and diverse applications. Sustainable biorefinery leaves greener footprints while producing high-value bioproducts like pectin. The essential oils and polyphenols obtained as byproducts from a pectin-based biorefinery are useful in cosmetics, toiletries and fragrance industries. Pectin can be extracted from organic sources following eco-friendly strategies, and the extraction techniques, structural alterations and the applications are continually being upgraded and standardized. Pectin has great applications in diverse areas, and its green synthesis is a welcome development. In future, growing industrial application of pectin is anticipated as research orients on biopolymers, biotechnologies and renewable source-based processes. As the world is gradually adopting greener strategies in sync with the global sustainable development goal, active involvement of policy makers and public participation are prime. Governance and policy framing are essential in the transition of the world economy towards circularity since green circular bioeconomy is ill-understood among the public in general and within the administrative circles in particular. Concerted efforts by researchers, investors, innovators, and policy and decision makers to integrate biorefinery technologies as loops within loop of biological structures and bioprocesses is suggested. The review focusses on generation of the different nature of food wastes including fruits and vegetables with cauterization of their components. It discusses the innovative extraction and biotransformation approaches for these waste conversions into value-added products at cost-effective and eco-friendly way. This article compiles numerous effective and efficient and green way pectin extraction techniques with their advantages with varying success in an integrated manner.
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4
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Liu J, Wang W, Qu H, Xiong X, Li X. Effect of moderate electric field on rheological properties, cell wall components, and microstructure of apple tissue. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2023.111516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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5
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Kim SY, Lee BM, Hong SY, Yeo HH, Jeong SH, Lee DU. A Pulsed Electric Field Accelerates the Mass Transfer during the Convective Drying of Carrots: Drying and Rehydration Kinetics, Texture, and Carotenoid Content. Foods 2023; 12:589. [PMID: 36766117 PMCID: PMC9914679 DOI: 10.3390/foods12030589] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/24/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
The pulsed electric field (PEF) is a non-thermal food processing technology that induces electroporation of the cell membrane thus improving mass transfer through the cell membrane. In this study, the drying and rehydration kinetics, microstructure, and carotenoid content of carrot (Daucus carota) pretreated by PEF during convective drying at 50 °C were investigated. The PEF treatment was conducted with different field strengths (1.0-2.5 kV/cm) using a fixed pulse width of 20 µs and at a pulse frequency of 50 Hz. The PEF 2.5 kV/cm showed the shortest drying time, taking 180 min, whereas the control required 330 min for the same moisture ratio, indicating a 45% reduction in drying time. The rehydration ability also increased as the strengths of PEF increased. PEF 2.5 kV/cm resulted in 27.58% increase in moisture content compared to the control after rehydration (1 h). Three mathematical models were applied to the drying and rehydration data; the Page and Peleg models were selected as the most appropriate models to describe the drying and rehydration kinetics, respectively. The cutting force of the sample was decreased as the strength of PEF increased, and a more homogeneous cellular structure was observed in the PEF pretreatment group. The reduction in drying time by PEF was beneficial to the carotenoid content, and PEF 2.5 kV/cm showed the highest preservation content of carotenoid. Overall, these results suggested that the pretreatment of PEF and the drying and rehydration rate influence the quality of products, functional components, and cellular structure.
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Affiliation(s)
| | | | | | | | | | - Dong-Un Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
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6
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Comparing the effect of several pretreatment steps, selected to steer (bio)chemical reactions, on the volatile profile of leek (Allium ampeloprasum var. porrum). Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Delbaere SM, Bernaerts T, Vangrunderbeek M, Vancoillie F, Hendrickx ME, Grauwet T, Van Loey AM. The Volatile Profile of Brussels Sprouts ( Brassica oleracea Var. gemmifera) as Affected by Pulsed Electric Fields in Comparison to Other Pretreatments, Selected to Steer (Bio)Chemical Reactions. Foods 2022; 11:foods11182892. [PMID: 36141018 PMCID: PMC9498443 DOI: 10.3390/foods11182892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 11/16/2022] Open
Abstract
Pulsed electric fields (PEF) at low field strength is considered a non-thermal technique allowing membrane permeabilization in plant-based tissue, hence possibly impacting biochemical conversions and the concomitant volatile profile. Detailed studies on the impact of PEF at low field strength on biochemical conversions in plant-based matrices are scarce but urgently needed to provide the necessary scientific basis allowing to open a potential promising field of applications. As a first objective, the effect of PEF and other treatments that aim to steer biochemical conversions on the volatile profile of Brussels sprouts was compared in this study. As a second objective, the effect of varying PEF conditions on the volatile profile of Brussels sprouts was elucidated. Volatile fingerprinting was used to deduce whether and which (bio)chemical reactions had occurred. Surprisingly, PEF at 1.01 kV/cm and 2.7 kJ/kg prior to heating was assumed not to have caused significant membrane permeabilization since similar volatiles were observed in the case of only heating, as opposed to mixing. A PEF treatment with an electrical field strength of 3.00 kV/cm led to a significantly higher formation of certain enzymatic reaction products, being more pronounced when combined with an energy input of 27.7 kJ/kg, implying that these PEF conditions could induce substantial membrane permeabilization. The results of this study can be utilized to steer enzymatic conversions towards an intended volatile profile of Brussels sprouts by applying PEF.
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Effect of thermosonication on texture degradation of carrot tissue in relation to alterations in cell membrane and cell wall structure. Food Chem 2022; 393:133335. [DOI: 10.1016/j.foodchem.2022.133335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 05/18/2022] [Accepted: 05/26/2022] [Indexed: 12/27/2022]
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9
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Trends in "green" and novel methods of pectin modification - A review. Carbohydr Polym 2022; 278:118967. [PMID: 34973782 DOI: 10.1016/j.carbpol.2021.118967] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 11/22/2022]
Abstract
Modification of hydrocolloids to alter their functional properties using chemical methods is well documented in the literature. There has been a recent trend of adopting eco-friendly and "green" methods for modification. Pectin, being a very important hydrocolloid finds its use in various food applications due to its gelling, emulsifying, and stabilizing properties. The adoption of various "green" methods can alter the properties of pectin and make it more suitable for incorporation in food products. The novel approaches such as microwave and pulsed electric field can also be utilized for solvent-free modification, making it desirable from the perspective of sustainability, as it reduces the consumption of organic chemicals. Pectic oligosaccharides (POSs) produced via novel approaches are being explored for their biological properties and incorporation in various functional foods. The review can help to set the perspective of potential scale-up and adoption by the food industry for modification of pectin.
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Alpos M, Leong SY, Liesaputra V, Oey I. Influence of pulsed electric fields (PEF) with calcium addition on the texture profile of cooked black beans (Phaseolus vulgaris) and their particle breakdown during in vivo oral processing. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2021.102892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Pulsed electric field combined with microwave-assisted extraction of pectin polysaccharide from jackfruit waste. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102844] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Effect of pulsed electric field, mild thermal pretreatment and calcium on texture changes of potato (Solanum tuberosum L.) during subsequent cooking. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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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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14
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Blahovec J, Kouřím P, Lebovka N. Volumetric Shrinkage and Poisson ‘s Ratio of Carrot Treated by Pulse Electric Fields. FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02711-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Humerez-Flores JN, Kyomugasho C, Gutiérrez-Ortiz AA, De Bie M, Panozzo A, Van Loey AM, Moldenaers P, Hendrickx ME. Production and molecular characterization of tailored citrus pectin-derived compounds. Food Chem 2021; 367:130635. [PMID: 34352690 DOI: 10.1016/j.foodchem.2021.130635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 06/21/2021] [Accepted: 07/16/2021] [Indexed: 11/28/2022]
Abstract
In this study, tailored-made citrus pectin-derived compounds were produced through controlled enzymatic and/or chemical modifications of commercial citrus pectin with different degrees of methylesterification (DM) and similar average molecular weight (MW). In the first treatment, degradation of the citrus pectin (CP) materials by endo-polygalacturonase (EPG) yielded pectins with average Mw's (between 2 and 60 kDa). Separation and identification of the oligosaccharide fraction present in these samples, revealed the presence of non-methylesterified galacturonic acid oligomers with degree of polymerization (DP) 1-5. In the second treatment, exploiting the combined effect of EPG and pectin lyase, compounds with MW between 2 and 21 kDa, containing methylesterified and non-methylesterified polygalacturonans (DP 1-6), were generated. Finally, CP was sequentially modified by chemical saponification and the action of EPG. A sample of DM 11% and MW 2.7 kDa, containing POS (DP 1-5), was produced. Diverse pectin-derived compounds were successfully generated for further studies exploring their functionality.
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Affiliation(s)
- Jessika N Humerez-Flores
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium.
| | - Clare Kyomugasho
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium.
| | - Ana A Gutiérrez-Ortiz
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium
| | - Margot De Bie
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium
| | - Agnese Panozzo
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium
| | - Ann M Van Loey
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium.
| | - Paula Moldenaers
- KU Leuven, Department of Chemical Engineering, Soft Matter, Rheology and Technology, Celestijnenlaan 200F, PB 2424, B-3001 Leuven, Belgium.
| | - Marc E Hendrickx
- KU Leuven, Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, PB 2457, B-3001 Leuven, Belgium.
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Moens LG, Huang W, Van Loey AM, Hendrickx ME. Effect of pulsed electric field and mild thermal processing on texture-related pectin properties to better understand carrot (Daucus carota) texture changes during subsequent cooking. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Thermal inactivation of pectin methylesterase from different potato cultivars (Solanum tuberosum L.). Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110600] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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