Chitosan and other edible coatings to extend shelf life, manage postharvest decay, and reduce loss and waste of fresh fruits and vegetables

Romanazzi, Gianfranco; Moumni, Marwa

doi:10.1016/j.copbio.2022.102834

Cited by 44 publications

(36 citation statements)

References 49 publications

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“…It acts in three different ways: it elicits host defense mechanisms, it discloses antimicrobial activity, and it has coating properties [90]. Its effectiveness changes based on the origin (it can be obtained by exoskeleton of crustaceans or insects or fungal mycelium), deacetylation degree (from 60 to 100%), molecular weight (between 3800 and 20,000 Da), production process (chemical or biological synthesis), environmental features (like pH and temperature), and not least sensitivity of fungal species [90][91][92]. Its water solubility, bio-adhesive properties, and related user-friendliness depend on just mentioned parameters and hydrochloride.…”

Section: Disease Controlmentioning

confidence: 99%

Pomegranate: Postharvest Fungal Diseases and Control

Mincuzzi¹,

Ippolito²

2023

New Advances in Postharvest Technology

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Due to well-known nutraceutical properties, pomegranate (Punica granatum L.) cultivation is recently increasing in various areas of the world including Italy. Fungal diseases are the major causes of postharvest yield and economic losses. Most of the fungi infect pomegranates in the field during the blooming stage remaining latent until fruit ripening, others infect fruit during harvest and postharvest handling through rind injuries. Main postharvest fungal diseases of pomegranates are gray and blue molds caused by Botrytis spp. and Penicillium spp., respectively, black heart and black spot due to Alternaria spp., anthracnose related to species ascribable to Colletotrichum genus, and Coniella rot, due to Coniella granati. Few fungicides are allowed for pre- and postharvest treatments, making it extremely difficult to control fungal infections. In this scenario, especially in organic fruit production, alternative control means may be a desirable solution to reduce pomegranate losses during the production chain. This chapter focuses on the most important postharvest diseases of pomegranates and possible strategies and means to reduce spoilage.

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Section: Disease Controlmentioning

confidence: 99%

Pomegranate: Postharvest Fungal Diseases and Control

Mincuzzi¹,

Ippolito²

2023

New Advances in Postharvest Technology

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“…V tuhej fáze je chitosan semikryštalický, nerozpustný vo vode ale rozpustný v zriedených organických kyselinách (Paidari et al, 2021). V súvislosti s prípravou jedlých filmov/náterov je chitosan jedným z najviac preskúmaných biopolymérov (Díaz-montes, Castro-muñoz, 2021), nakoľko okrem požadovaných vlastností biopolymérov na prípravu jedlých náterov/filmov ako sú tvorba filmu, viskozita, biokompatibilita, biodegrabilita, netoxickosť, chitosan disponuje aj antimikriobiálnym účinkom voči širokému spektru baktérii, mikroskopických húb a vírusov (Grande-Tovar et al, 2018;Romanazzi, Moumni, 2022;V et al, 2022). Teda už samotná prítomnosť chitosanu v konkrétnom jedlom nátere/filme zabezpečuje jeho aktívnosť.…”

Section: Chitosan Ako Zložka Jedlých Náterov/filmovunclassified

Food safety and quality. Scientific proceedings

2023

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We tested 68 strains of Staphylococci, (S. aureus -29, S. epidermidis -34, S. haemolyticus -23, S. warneri -16, and S. chromogenes -6). They have been isolated from various types of mastitis. Staphylococci in milk samples were isolated from acute form (27,9 %), subacute form (10,3 %), subclinical form (25 %) and latent form (36,8 %). The most common form of mastitis in dairy cows was latent mastitis. Formation of biofilm was evaluated by results of two methods: quantitative growth on CongoRed agar (CRA) and semiquantitative growth on microtiter plates (MTP). At the significance level of α = 0.05, the dependence of biofilm formation in bacteria positive using both phenotypic methods in S. aureus, S. epidermidis and S. haemolyticus was confirmed. The positivity in S. warneri and S. chromogenes determined by both methods was random. Based on our results and found dependence in comparison both methods of biofilm detection, we can recommend the simultaneous use of these methods in ideal conditions. It should be supplemented by determining the presence of genes encoding biofilm production. Keywords production of biofil:, staphylococci m, cow´s mastitis, milk ÚVOD Tvorba biofilmu ako významný faktor virulencie pomáha baktériám vyhnúť sa imunitnej obrane hostiteľa a antimikrobiálnej terapii. V chovoch prežúvavcov má biofilm vplyv na intenzitu a pretrvávanie mastitíd spôsobených v prevažnej miere baktériami z rodu Staphylococcus spp., ktoré sú najčastejšou príčinou mastitíd u prežúvavcov (Vasiľ et al., 2017).Vzhľadom na úlohu biofilmu pri perzistencii a kolonizácii stafylokokov v epiteli mliečnej žľazy, zníženie imunologickej odpovede organizmu, rezistencie na antibiotickú liečbu a ťažkosti pri eradikácii patogénov má podrobné preskúmanie a pochopenie mechanizmu tvorby biofilmu zásadný význam pri terapii príp. prevencii zápalov mliečnej žľazy. Je všeobecne známe, že baktérie produkujúce biofilm je ťažké z mliečnej žľazy odstrániť, sú často rezistentné na antibiotickú liečbu, ktorá sa na liečbu mastitíd bežne používa (Farkašová et al., 2020).Cieľom našej práce bolo stanovenie biofilmu u stafylokokov izolovaných z mlieka mastitídnych dojníc počas jedného roka. MATERIÁL A METODIKAVyšetrované vzorky mlieka sme odobrali v priebehu jedného roka od dojníc na PD Kluknava na východe Slovenska. Odbery sme uskutočnili u dojníc v štvrťročných intervaloch (marec, jún, september december). Celkom bolo vyšetrených 120 kusov dobytka. Mlieko bolo hneď po odbere vyšetrené maštaľným NK testom na detekciu typu mastitídy (akútna, subakútna, subklinická, latentná), a následne bakteriologickou kultiváciou na 5 % krvnom agare a na špeciálnych selektívnych pôdach. Následne boli stafylokokové kmene identifikované pomocou dvoch rôznych identifikačných metód: na základe biochemických enzymatických vlastností baktérií STAPHYtest 24 s identifikačným programom TNW 7.0 (Erba-Lachema, Brno, Česká republika) s presnosťou detekcie viac ako 90,0 % a na základe stanovenia

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“…To increase the durability of cut flowers, postharvest technologies such as films on the surface of the product and modification of the atmosphere around it have been used. These coatings have properties that act as barriers to respiratory exchange, reducing the evapotranspiration of water vapour and other gases in the plant, resulting in quality maintenance and prolonging the shelf life (Romanazzi;Moumni, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Cassava starch, when compared to other film compositions such as chitosan, polyvinyl chloride (PVC) in addition with polymer, carnauba wax and other compounds, has a low-cost and desirable characteristic for biofilms preparation, such as good transparency, good resistance to gas exchange, resistance to mechanical damage, maintenance, and integrity of the cell wall, barrier to the incorporation of solutes and association with other compounds with fungicidal properties (Mattos et al, 2017;Guerra et al, 2019;Romanazzi;Moumni, 2022). The coatings performed using cassava starch are isotropic, odourless, tasteless, colourless, nontoxic, and biodegradable, turn in a sustainable product (Oluwasina et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Starch-based films for Red Torch ginger inflorescences postharvest conservation

et al. 2023

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Different products have been tested to increase the vase life of cut flowers after harvest such as the biodegradable films. These products have been used in fruits since the application on the surface may provide the modification of the atmosphere around it, although, there is no information for flowers. The objective was to evaluate the effectiveness of cassava starch films as a postharvest product for Red Torch Ginger inflorescences. On the first experiment, different starch concentrations in the solution were tested and in the second experiment starch, concentrations with plasticizers and adjuvants were evaluated. The application of the biodegradable film in Red Torch stems acted as a barrier to the gases, as observed by their water absorption rate and the maintenance of fresh weight, maintaining postharvest quality up to Day 6. The visual quality was better in the inflorescences treated with 6% starch and in the films without additives. The use of 6% starch films led to lower contents of hydrogen peroxide and lipid peroxidation and higher levels of primary-metabolism macromolecules up to Day 6, delaying senescence and increasing postharvest durability. The addition of glycerol plasticizer to the different film concentrations improved the film resistance characteristics. It is recommended the use of films based on cassava starch at a concentration of 6%. The use of the adjuvant is not essential since it changed the film’s characteristics, leaving it less transparent and more viscous, hindering drying.

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Chitosan and other edible coatings to extend shelf life, manage postharvest decay, and reduce loss and waste of fresh fruits and vegetables

Cited by 44 publications

References 49 publications

Pomegranate: Postharvest Fungal Diseases and Control

Pomegranate: Postharvest Fungal Diseases and Control

Food safety and quality. Scientific proceedings

Starch-based films for Red Torch ginger inflorescences postharvest conservation

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