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Souza DVS, Melo MF, Ambrósio MMQ, Alves Júnior C, Melo NJA, Costa LL, Morais PLD. Effect of plasma and heat treatments on orange juice quality. BRAZ J BIOL 2023; 83:e272709. [PMID: 37466514 DOI: 10.1590/1519-6984.272709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/05/2023] [Indexed: 07/20/2023] Open
Abstract
Heat treatment is used in the orange juice industry to neutralize the action of pathogenic microorganisms. However, it can reduce the nutritional value of the juice. Thus, our study assessed the cold plasma treatment as an alternative method against Escherichia coli and Candida albicans in 'Lima' orange juice. Both, plasma and heat treatments, reduced the amount of E. coli in the juice, inactivating 16.72 and 100%, respectively. Plasma did not inactivate C. albicans, but heat treatment inactivated 100%. Plasma and heat treatment increased Hue angle and luminosity (more yellowish juice). Plasma reduced vitamin C, carotenoids, and polyphenols content, while increased flavonoids. Heat treatment reduced the carotenoid content. However, neither heat nor plasma treatment altered the antioxidant activity. The plasma treatment reduced the intensity of color (chroma), the soluble solids content and the acidity ratio, total sugars, and the vitamin C content of juice compared to the heat-treated and control juices. Plasma-treated juice showed increased levels of yellow flavonoids, total phenolics and antioxidant activity until the 12th day of storage.
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Affiliation(s)
- D V S Souza
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fisiologia Pós-colheita, Mossoró, RN, Brasil
| | - M F Melo
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fisiologia Pós-colheita, Mossoró, RN, Brasil
| | - M M Q Ambrósio
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fitopatologia e Microbiologia, Mossoró, RN, Brasil
| | - C Alves Júnior
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Centro Integrado de Inovação Tecnológica do Semiárido, Programa de Pós-graduação em Ciência e Engenharia de Materiais, Mossoró, RN, Brasil
| | - N J A Melo
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fisiologia Pós-colheita, Mossoró, RN, Brasil
| | - L L Costa
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fisiologia Pós-colheita, Mossoró, RN, Brasil
| | - P L D Morais
- Universidade Federal Rural do Semi-Árido - UFERSA, Centro de Ciências Agrárias, Departamento de Ciências Agronômicas e Florestais, Programa de Pós-graduação em Fitotecnia, Laboratório de Fisiologia Pós-colheita, Mossoró, RN, Brasil
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2
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Zhu Q, Yao S, Wu Z, Li D, Ding T, Liu D, Xu E. Hierarchical structural modification of starch via non-thermal plasma: A state-of-the-art review. Carbohydr Polym 2023; 311:120747. [PMID: 37028874 DOI: 10.1016/j.carbpol.2023.120747] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/05/2023]
Abstract
The hierarchical architecture of natural and processed starches with different surface and internal structures determines their final physicochemical properties. However, the oriented control of starch structure presents a significant challenge, and non-thermal plasma (cold plasma, CP) has gradually been used to design and tailor starch macromolecules, though without clear illustration. In this review, the multi-scale structure (i.e., chain-length distribution, crystal structure, lamellar structure, and particle surface) of starch is summarized by CP treatment. The plasma type, mode, medium gas and mechanism are also illustrated, as well as their sustainable food applications, such as in food taste, safety, and packaging. The effects of CP on the chain-length distribution, lamellar structure, amorphous zone, and particle surface/core of starch includes irregularity due to the complex of CP types, action modes, and reactive conditions. CP-induced chain breaks lead to short-chain distributions in starch, but this rule is no longer useful when CP is combined with other physical treatments. The degree but not type of starch crystals is indirectly influenced by CP through attacking the amorphous region. Furthermore, the CP-induced surface corrosion and channel disintegration of starch cause changes in functional properties for starch-related applications.
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Affiliation(s)
- Qingqing Zhu
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Siyu Yao
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Zhengzong Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Dandan Li
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Tian Ding
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Enbo Xu
- College of Biosystems Engineering and Food Science, State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China.
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3
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Xu C, Lu J, Zeng Q, Zhang J, Dong L, Huang F, Shen Y, Su D. Magnetic nanometer combined with microwave: Novel rapid thawing promotes phenolics release in frozen-storage lychee. Food Chem 2023; 410:135384. [PMID: 36610094 DOI: 10.1016/j.foodchem.2022.135384] [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: 11/14/2022] [Revised: 12/13/2022] [Accepted: 12/31/2022] [Indexed: 01/03/2023]
Abstract
Magnetic nanometer combined with microwave thawing (MN-MT) could become a novel solution to challenges uneven and overheating of microwave thawing (MT), while retaining high thawing efficiency, compared to conventional water immersion thawing (WT). In this study, MN-MT was applied to thaw fruit (lychee as an example) for the first time, and was evaluated by comparison with WT, MT and water immersion combined with microwave thawing (WI-MT). Results showed that MN-MT could significantly shorten the thawing time of frozen lychee by 80.67%, 25.86% and 18.83% compared to WT, MT and WI-MT, respectively. Compared to WT, MN-MT was the only thawing treatment which significantly enhanced the release of quercetin-3-O-rutinose-7-O-α-l-rhamnoside, according to HPLC-DAD. Meanwhile, thermal-sensitive procyanidin B2, phenylpropionic acid and protocatechuic acid were found to be protected from degradations only by MN-MT based on UPLC-ESI-QTOF-MS/MS results. In summary, MN-MT is a potential novel treatment for rapid thawing and quality maintenance of frozen fruits.
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Affiliation(s)
- Canhua Xu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Jiaming Lu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Qingzhu Zeng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Junjia Zhang
- Department of Food Science, Rutgers, The State University of New Jersey, 65 Dudley Road, New Brunswick, NJ 08901, USA
| | - Lihong Dong
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Fei Huang
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Yingbin Shen
- School of Life Science, Guangzhou University, Guangzhou 510006, PR China
| | - Dongxiao Su
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China.
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Pomegranate Peel Powder: In Vitro Efficacy and Application to Contaminated Liquid Foods. Foods 2023; 12:foods12061173. [PMID: 36981100 PMCID: PMC10048077 DOI: 10.3390/foods12061173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
In this study the recycling of pomegranate peel powder (PPP) was proposed. In particular, the use of powder loaded in a silk fibroin polymeric matrix to create an active pad was tested. For the sake of comparison, the powder alone was also analysed. Both powder and active pad efficacy was assessed in two different food systems, soymilk (rich in proteins), preliminarily contaminated with Pseudomonas spp. and yeasts, and apple juice (rich in carbohydrates), preliminarily contaminated with Alyciclobacillus acidoterrestris. Three different concentrations of powder alone and powder in the pad were tested (5%, 7.5% and 10% w/v) in both types of beverages. To assess a possible dependence of the efficacy on the powder granulometry, different powder sizes were preliminarily analysed on Pseudomonas spp. and yeasts using an in vitro test. PPP was effective on both Pseudomonas spp. and yeasts. No significant differences appeared among the tested granulometries and therefore in the subsequent tests powder with an average diameter of 250 µm was used. Results recorded with soymilk and apple juice were different. When applied to the soymilk, the activity of PPP in the pad was less effective than that recorded when the powder was directly added to the beverage. With the two highest powder concentrations directly added to food, more than four log cycle reductions in Pseudomonas spp. and yeast cells were recorded, compared to soymilk without any powder. Compared to the control sample, all the soymilk samples either with PPP or with the active pad showed a delayed microbial and fungal growth. When applied to apple juice, both powder and pad were effective at completely inhibiting the proliferation of A. acidoterrestris (<102 CFU/g).
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5
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Pilot study on the use of cold atmospheric plasma for preservation of bread. Sci Rep 2022; 12:22003. [PMID: 36539471 PMCID: PMC9768121 DOI: 10.1038/s41598-022-26701-1] [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: 09/13/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Cold atmospheric plasma (CAP) is used as an emerging technology for food preservation. In this study, CAP treatment has been applied to bakery products for the first time. The aim of the work was to investigate the effect of the use of CAP on the amount of microorganisms during bread storage. Basic physicochemical properties and bread texture were determined during storage for 0, 3, and 6 days. The study material included gluten-free and mixed wheat-rye bread treated with CAP for 2 and 10 min. The results showed that no mesophilic bacteria or fungi were found after ten minutes of the bread exposure to CAP. In addition, only 2-min non-thermal sterilization resulted in complete inhibition of yeast and mould growth in the gluten-free and wheat-rye bread. A decrease in the microbial growth in the bread was noted; however, a simultaneous decrease in the moisture content of the bread was observed. After the application of plasma for 2 or 10 min, both the gluten-free and mixed wheat-rye bread was characterized by reduced humidity, which also resulted in a significant increase in the hardness and a slight increase in the springiness of the bread. The use of CAP in storage of bread is promising; nevertheless, it is necessary to further study the effect of this treatment in bread with improvers, especially with hydrocolloids and fibers.
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Velebit B, Milojević L, Baltić T, Grković N, Gummalla S, Velebit M, Škoko I, Mojsova S, Putnik P. Efficacy of cold atmospheric plasma for inactivation of viruses on raspberries. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Nonthermal Plasma Effects on Fungi: Applications, Fungal Responses, and Future Perspectives. Int J Mol Sci 2022; 23:ijms231911592. [PMID: 36232892 PMCID: PMC9569944 DOI: 10.3390/ijms231911592] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 11/18/2022] Open
Abstract
The kingdom of Fungi is rich in species that live in various environments and exhibit different lifestyles. Many are beneficial and indispensable for the environment and industries, but some can threaten plants, animals, and humans as pathogens. Various strategies have been applied to eliminate fungal pathogens by relying on chemical and nonchemical antifungal agents and tools. Nonthermal plasma (NTP) is a potential tool to inactivate pathogenic and food-contaminating fungi and genetically improve fungal strains used in industry as enzyme and metabolite producers. The NTP mode of action is due to many highly reactive species and their interactions with biological molecules. The interaction of the NTP with living cells is believed to be synergistic yet not well understood. This review aims to summarize the current NTP designs, applications, and challenges that involve fungi, as well as provide brief descriptions of underlying mechanisms employed by fungi in interactions with the NTP components.
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Spectroscopic Characterization of a Pulsed Low-Current High-Voltage Discharge Operated at Atmospheric Pressure. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The advantages of pulsed low-current high-voltage discharges operated at atmospheric pressure and the ease with which such discharges can be implemented industrially contributed to their popularity. However, the high reactivity of a pulsed plasma implies that thorough diagnostics are needed to fully understand the interactions inside these plasmas. Some of the key parameters determining plasma properties of low-current discharges are the electron number density and the temperature of heavy particles. Both parameters can be determined experimentally with spectroscopic techniques, for example by investigating the broadening of spectral lines due to the Stark effect and by fitting synthetic spectra to molecular transitions. To the authors’ knowledge, experimentally determined electron densities for pulsed low-current discharges operated in a power range between 300 W and 1000 W have not been performed in previous works. Thus, in this work, the electron number density and temperature of heavy particles of one of several commercially available plasma systems are determined by means of emission spectroscopy.
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NMR Spectroscopy and Chemometrics to Evaluate the Effect of Different Non-Thermal Plasma Processing on Sapota-do-Solimões (Quararibea cordata Vischer) Juice Quality and Composition. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02792-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Tiban NN, Šimović M, Polović M, Šarić A, Tomac I, Matić P, Jakobek L. The Effect of High Voltage Electrical Discharge on the Physicochemical Properties and the Microbiological Safety of Rose Hip Nectars. Foods 2022; 11:foods11050651. [PMID: 35267282 PMCID: PMC8909758 DOI: 10.3390/foods11050651] [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: 01/26/2022] [Revised: 02/16/2022] [Accepted: 02/20/2022] [Indexed: 11/24/2022] Open
Abstract
Although neglected as an industrial raw material, rose hip has been important for both nutritional and medical purposes for centuries. The main goal of this study was to propose a rapid and inexpensive non-thermal technique such as high voltage electrical discharge (HVED) to preserve valuable rose hip bioactive compounds, towards the development of high-quality products, including low-calorie products. The objective of this work was to evaluate the effects of HVED on the physicochemical properties and the microbiological safety of rose hip nectar formulations and, for comparison, on a pasteurised sample. Physicochemical analysis proved that rose hip pulp and the prepared nectars were valuable sources of polyphenols and ascorbic acid with high antioxidant activity. The HVED technique had minimal effects on the quality characteristics of the nectars under the different process conditions (50, 100 Hz; 10, 15, 20 min). In addition, the pasteurised nectar showed the greatest loss of ascorbic acid (54%) and phenolic compounds (40%). The microbiological quality of nectars was examined immediately after preparation/treatment and after 6 and 12 days of storage at 4 °C. In addition to the pasteurised sample, HVED-treated rose hip nectar prepared from microwave-blanched puree with extended shelf life had satisfactory microbiological safety after storage.
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Affiliation(s)
- Nela Nedić Tiban
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
- Correspondence:
| | - Mirela Šimović
- Department of Health Ecology, Teaching Institute of Public Health Osijek-Baranja County, Drinska 8, 31000 Osijek, Croatia;
| | - Martina Polović
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
| | - Antonija Šarić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
| | - Ivana Tomac
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
| | - Petra Matić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
| | - Lidija Jakobek
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 18, 31000 Osijek, Croatia; (M.P.); (A.Š.); (I.T.); (P.M.); (L.J.)
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Veerana M, Yu N, Ketya W, Park G. Application of Non-Thermal Plasma to Fungal Resources. J Fungi (Basel) 2022; 8:jof8020102. [PMID: 35205857 PMCID: PMC8879654 DOI: 10.3390/jof8020102] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/15/2022] [Accepted: 01/20/2022] [Indexed: 12/21/2022] Open
Abstract
In addition to being key pathogens in plants, animals, and humans, fungi are also valuable resources in agriculture, food, medicine, industry, and the environment. The elimination of pathogenic fungi and the functional enhancement of beneficial fungi have been the major topics investigated by researchers. Non-thermal plasma (NTP) is a potential tool to inactivate pathogenic and food-spoiling fungi and functionally enhance beneficial fungi. In this review, we summarize and discuss research performed over the last decade on the use of NTP to treat both harmful and beneficial yeast- and filamentous-type fungi. NTP can efficiently inactivate fungal spores and eliminate fungal contaminants from seeds, fresh agricultural produce, food, and human skin. Studies have also demonstrated that NTP can improve the production of valuable enzymes and metabolites in fungi. Further studies are still needed to establish NTP as a method that can be used as an alternative to the conventional methods of fungal inactivation and activation.
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Affiliation(s)
- Mayura Veerana
- Plasma Bioscience Research Center, Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Korea; (M.V.); (N.Y.); (W.K.)
| | - Nannan Yu
- Plasma Bioscience Research Center, Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Korea; (M.V.); (N.Y.); (W.K.)
| | - Wirinthip Ketya
- Plasma Bioscience Research Center, Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Korea; (M.V.); (N.Y.); (W.K.)
| | - Gyungsoon Park
- Plasma Bioscience Research Center, Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, Korea; (M.V.); (N.Y.); (W.K.)
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
- Correspondence: ; Tel.: +82-2-940-8324
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Zhu Y, Zhang M, Mujumdar AS, Liu Y. Application advantages of new non-thermal technology in juice browning control: A comprehensive review. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2021.2021419] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuanyuan Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
| | - Min Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- Jiangsu Province International Joint Laboratory on Fresh Food Smart Processing and Quality Monitoring, Jiangnan University, Wuxi, Jiangsu, China
| | - Arun S. Mujumdar
- Department of Bioresource Engineering, Macdonald College, McGill University, Ste. Anne de Bellevue, Quebec, Canada
| | - Yaping Liu
- R & D Center, Guangdong Galore Food Co., Ltd. Guangdong, Zhongshan, China
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Tarabová B, Tampieri F, Maran E, Marotta E, Ostrihoňová A, Krewing M, Machala Z. Chemical and Antimicrobial Effects of Air Non-Thermal Plasma Processing of Fresh Apple Juice with Focus on Safety Aspects. Foods 2021; 10:foods10092055. [PMID: 34574165 PMCID: PMC8471106 DOI: 10.3390/foods10092055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
Freshly squeezed apple juice was subjected to air non-thermal plasma treatment to investigate the capability of this processing method to inactivate microorganisms and to evaluate its safety when applied to liquid food products. Two different configurations of a transient spark discharge in ambient air were tested: an electrospray system with the juice flowing directly through the high voltage needle electrode, and a batch system, where the discharge was generated onto the surface of the juice. The key physico-chemical parameters of the juice, such as pH, conductivity, color, transmittance, and Brix degree, did not significantly change upon treatment. The concentration of nitrate ions formed by the plasma was safe, while that of nitrite ions and hydrogen peroxide was initially higher than the safety limits, but decreased within 24 h post treatment. The plasma effect on individual natural components of the juice, such as sugars, organic acids, and polyphenols, treated in water solutions led to their partial or substantial decomposition. However, when these compounds were plasma-treated altogether in the juice, they remained unaffected. The antimicrobial effect of the plasma processing was evaluated via the inoculation of model microorganisms. A stronger (6 log) decontamination was detected for bacteria Escherichia coli with respect to yeast Saccharomyces cerevisiae. Plasma processing led to a substantial extension of the juice shelf-life by up to 26 days if refrigerated, which represents a promising application potential in food technology.
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Affiliation(s)
- Barbora Tarabová
- Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 84248 Bratislava, Slovakia; (A.O.); (Z.M.)
- Correspondence: (B.T.); (E.M.)
| | - Francesco Tampieri
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (F.T.); (E.M.)
| | - Elisabetta Maran
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (F.T.); (E.M.)
| | - Ester Marotta
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (F.T.); (E.M.)
- Correspondence: (B.T.); (E.M.)
| | - Andrea Ostrihoňová
- Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 84248 Bratislava, Slovakia; (A.O.); (Z.M.)
| | - Marco Krewing
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitaetsstr. 150, 44780 Bochum, Germany;
| | - Zdenko Machala
- Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, 84248 Bratislava, Slovakia; (A.O.); (Z.M.)
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14
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Warne GR, Williams PM, Pho HQ, Tran NN, Hessel V, Fisk ID. Impact of cold plasma on the biomolecules and organoleptic properties of foods: A review. J Food Sci 2021; 86:3762-3777. [PMID: 34337748 DOI: 10.1111/1750-3841.15856] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 11/27/2022]
Abstract
Cold plasma is formed by the nonthermal ionization of gas into free electrons, ions, reactive atomic and molecular species, and ultraviolet (UV) radiation. This cold plasma can be used to alter the surface of solid and liquid foods, and it offers multiple advantages over traditional thermal treatments, such as no thermal damage and increased output variation (due to the various input parameters gas, power, plasma type, etc.). Cold plasma appears to have limited impact on the sensory and color properties, at lower power and treatment times, but there has been a statistically significant reduction in pH for most of the cold plasma treatments reviewed (p < 0.05). Carbohydrates (cross linking and glycosylation), lipids (oxidation), and proteins (secondary structure) are more significantly impacted due to cold plasma at higher intensities and longer treatment times. Although cold plasma treatments and food matrices can vary considerably, this review has identified the literary evidence of some of the influences and impacts of the vast array of cold plasma treatment parameters on the biomolecular and organoleptic properties of these foods. Due to the rapidly evolving nature of the field, we have also identified that authors prioritize the presentation of different information when publishing from different research areas. Therefore, we have proposed a number of key physical and chemical cold plasma parameters that should be considered for inclusion in all future publications in the field.
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Affiliation(s)
- George R Warne
- Division of Food Sciences, School of Biosciences, University of Nottingham, Loughborough, UK.,The University of Adelaide, Adelaide, South Australia, Australia
| | - Philip M Williams
- Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham, UK
| | - Hue Quoc Pho
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, Australia.,School of Chemical Engineering, University of Warwick, Coventry, UK
| | - Nam Nghiep Tran
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, Australia.,School of Chemical Engineering, University of Warwick, Coventry, UK
| | - Volker Hessel
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, Australia.,School of Chemical Engineering, University of Warwick, Coventry, UK
| | - Ian D Fisk
- Division of Food Sciences, School of Biosciences, University of Nottingham, Loughborough, UK.,The University of Adelaide, Adelaide, South Australia, Australia
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15
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Influence of Plasma Activated Water Generated in a Gliding Arc Discharge Reactor on Germination of Beetroot and Carrot Seeds. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11136164] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
One of the new methods of protecting and supporting plant growth is the use of low-temperature plasma. The aim of this study is to evaluate the feasibility of using plasma activated water produced in an atmospheric pressure gliding arc reactor for germination of beetroot (Beta vulgaris) and carrot (Daucus carota) seeds. The study was carried out for different plasma treatment times of water (5, 10 and 20 min) and with fixed geometry and power of the discharge system, using air as the working gas. The effect on germination was evaluated based on the fraction of germinated seeds and their length at 7 and 14 days after treatment. Analysis of fungi present on the seed surface and imaging of the seed surface using scanning electron microscopy (SEM) were auxiliary methods to evaluate the type of treatment effect. In the case of beetroot, a positive effect on the number and length of germinated seeds was observed, which increased with increasing treatment time. This effect can be attributed, among other things, to the surface changes observed on microscopic photographs. In the case of carrot seeds, a more significant positive effect on germination was observed. Fungal decontamination effect was relatively weaker than with the use of the chemical method with sodium hypochlorite.
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