Improving function of biocontrol agents incorporated in antifungal fruit coatings: a review

Marín, A.; Atarés, Lorena; Chiralt, Amparo

doi:10.1080/09583157.2017.1390068

Cited by 45 publications

(23 citation statements)

References 107 publications

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“…Promoting an effective establishment of BCAs could be crucial, and several studies also tested some protectants to enhance the viability of cells after application and to protect BCAs against abiotic factors. [38][39][40] These results highlight the importance of the abiotic factors when BCAs are applied under field conditions. Despite the fact that C. sake CPA-1 develops in a wide range of conditions, rainfall events after application could determine its biocontrol efficacy.…”

Section: Discussionmentioning

confidence: 80%

“…The benefits of an establishment period before exposure to limiting conditions or simulated rainfall were also demonstrated for the liquid formulation of CPA‐1 blended with Fungicover®. Promoting an effective establishment of BCAs could be crucial, and several studies also tested some protectants to enhance the viability of cells after application and to protect BCAs against abiotic factors …”

Section: Discussionmentioning

confidence: 99%

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Verifying the biocontrol activity of novel film‐forming formulations of Candida sake CPA‐1: resilience in relation to environmental factors, rainfall episodes, and control of Botrytis cinerea on different hosts

2019

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BACKGROUND The efficacy of Candida sake CPA‐1 as a biocontrol agent against several diseases has been studied since it was isolated 20 years ago. However, it was only recently that two suitable and effective film‐forming formulations based on potato starch and maltodextrins were developed using the fluidized‐bed spray‐drying system. The present work aimed to confirm the capability of both novel formulations by testing their resilience on grapes at different temperatures (0, 22, and 30 °C), relative humidities (40% and 85%), and simulated rainfall levels. Another objective was to examine the control of Botrytis cinerea in different hosts. RESULTS The CPA‐1 cells from both dried formulations survived better than the liquid formulation on grapes stored at 0 and 22 °C regardless of the relative humidity. After simulated rainfall, potato starch formulation achieved significantly higher populations than maltodextrin formulation, although the highest reduction was −1.6 log N N0−1. A positive effect of cell establishment prior to the simulated rainfall was shown, and recovered cells from the potato starch formulation were significantly higher after 72 h of cell establishment. Finally, both formulations reduced the incidence and severity of B. cinerea on pears, apples, and tomatoes. CONCLUSION The potential of these novel film‐forming formulations of C. sake CPA‐1 was verified. The resilience of formulated C. sake was better than the commercialized liquid formulation, the adherence of the formulations to the grapes improved after an establishment period prior to rain exposure, and the control of B. cinerea was verified in a wider range of hosts. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Verifying the biocontrol activity of novel film‐forming formulations of Candida sake CPA‐1: resilience in relation to environmental factors, rainfall episodes, and control of Botrytis cinerea on different hosts

2019

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“…Biological control is also a promising alternative to unpopular synthetic fungicides, and research into postharvest biocontrol has increased in recent decades [63,64]. The main characteristics of an ideal biocontrol agent (BCA) are related to its biosafety, activity in a range of environments and against a variety of pathogens, and ease of management and use [65].…”

Section: Antifungal Coatings For Fruit Preservationmentioning

confidence: 99%

“…In this sense, the coating-forming formulations should contain components which not only allow for coating formation, but are also compatible with the cells and provide them with an adequate substrate for nutrition and growth [64]. Marín [66] evaluated the effect of different coating-forming systems containing C. sake CPA-1 as BCA, based on different biopolymers (corn starch, hydroxypropylmethylcellulose, sodium caseinate, or pea protein) with and without surfactants, on the adherence, viability and survival of C. sake cells, as well as on their biocontrol efficacy against B. cinerea infections of coated grapes.…”

Section: Antifungal Coatings For Fruit Preservationmentioning

confidence: 99%

Starch-Based Coatings for Preservation of Fruits and Vegetables

2018

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Considerable research has focused on the control of the physiological activity of fruits and vegetables in postharvest conditions as well as microbial decay. The use of edible coatings (ECs) carrying active compounds (e.g., antimicrobials) represents an alternative preservation technology since they can modify the internal gas composition by creating a modified atmosphere through the regulation of the gas exchange (oxygen, carbon dioxide, volatiles) while also limiting water transfer. Of the edible polymers able to form coating films, starch exhibits several advantages, such as its ready availability, low cost and good filmogenic capacity, forming colourless and tasteless films with high oxygen barrier capacity. Nevertheless, starch films are highly water sensitive and exhibit limited water vapour barrier properties and mechanical resistance. Different compounds, such as plasticizers, surfactants, lipids or other polymers, have been incorporated to improve the functional properties of starch-based films/coatings. This paper reviews the starch-based ECs used to preserve the main properties of fruits and vegetables in postharvest conditions as well as the different factors affecting the coating efficiency, such as surface properties or incorporation of antifungal compounds. The great variability in the plant products requires specific studies to optimize the formulation of coating forming products.

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“…The use of biopolymer-based coatings to prevent fungal decay of fruit has been extensively reviewed (Marín et al, 2017a;Palou et al, 2015). One of the multiple advantages of ECs is their role in acting as carriers of beneficial organisms producing bioactive compounds, such as LAB.…”

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confidence: 99%

Lactic Acid Bacteria Incorporated into Edible Coatings to Control Fungal Growth and Maintain Postharvest Quality of Grapes

Marín¹,

Plotto²,

Atarés³

et al. 2019

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Lactic acid bacteria (LAB) have been shown to prevent the growth and activity of several postharvest pathogen fungi in fruit and vegetables because of their ability to produce antimicrobial metabolites. Edible coatings (ECs) can be used as carriers of LAB and could provide an alternative natural preservation method. The effectiveness of Lactobacillus plantarum against fungal decay on grapes applied together with EC was studied. Different formulations with or without L. plantarum were considered, using pregelatinized potato starch (PS) or sodium caseinate (NaC) as main components of the coating matrices. In some of the formulations, oleic acid (OA) was added as a surfactant. The population dynamics of the bacterium and its ability to control fungal decay were studied together with the assessment of fruit quality. NaC-based formulations improved survival of L. plantarum on fruit surface after 7 days of storage in comparison with a water control. On the other hand, L. plantarum in PS-based formulation without OA reduced Botrytis incidence more than when applied in NaC formulation or in water. Coatings had little effect on berry quality (weight, color, firmness, and soluble solids content) of grapes throughout storage, although some of the coated samples maintained acidity and maturity index during storage better than others. Therefore, LAB applied in ECs could provide a viable biocontrol method for postharvest disease in grapes.

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Improving function of biocontrol agents incorporated in antifungal fruit coatings: a review

Cited by 45 publications

References 107 publications

Verifying the biocontrol activity of novel film‐forming formulations of Candida sake CPA‐1: resilience in relation to environmental factors, rainfall episodes, and control of Botrytis cinerea on different hosts

Verifying the biocontrol activity of novel film‐forming formulations of Candida sake CPA‐1: resilience in relation to environmental factors, rainfall episodes, and control of Botrytis cinerea on different hosts

Starch-Based Coatings for Preservation of Fruits and Vegetables

Lactic Acid Bacteria Incorporated into Edible Coatings to Control Fungal Growth and Maintain Postharvest Quality of Grapes

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