Physiological and antagonistic properties of Pichia kluyveri for curative and preventive treatments against post-harvest fruit fungi

• Autorzy: Mewa-Ngongang M. , du Plessis H.W. , Chidi B.S. , Hutchinson U.I. , Ntwampe K.S. , Okudoh V.I. , Jolly N.P.
• Języki publikacji: EN

Abstrakty

EN

Postharvest fruit loss due to spoilage is mainly attributed to fungal infections. Synthetic chemicals can be used to preserve fruits, but they are expensive and pose risks to human health. The replacement of these chemicals by safer and cost-effective biocontrol agents is now a priority. This study investigated the physiological characteristics of Pichia kluyveri and its potential use as a biofungicide. The antagonistic effect of P. kluyveri against Botrytis cinerea and Monilinia laxa was tested on yeast peptone dextrose agar, grapes, apples, and pears. Yeast growth was variably possible at different temperatures, pH, and salinity levels. Strain-dependent antagonistic responses were observed on agar plates, where M. laxa was the more sensitive fungus to the antagonistic yeast. P. kluyveri demonstrated strong physiological properties under stressful temperature, pH, and salinity conditions. Preventive applications of P. kluyveri to apples were 95% effective against B. cinerea and 100% effective against M. laxa. Fruit type-dependent responses were evident on pears. Similarly, preventive application on grapes was also effective against the fungal pathogens studied. In general, the antagonistic responses were both fungus- and treatment- (curative and preventive) dependent. Therefore, the preventive use of P. kluyveri against post-harvest fruit-fungal infections proved to be an effective method for biological control of grapes, apples, and pears against fungal spoilage organisms Botrytis cinerea and Monilinia laxa.

• Wydawca: -
• Czasopismo: Polish Journal of Food and Nutrition Sciences
• Rocznik: 2021
• Tom: 71
• Numer: 3
• Opis fizyczny: p.245-253,fig.,ref.

Twórcy

autor

Mewa-Ngongang M.

• Post-Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Private Bag X5026, Stellenbosch, 7599, South Africa
• Bioresource Engineering Research Group (BioERG), Department of Biotechnology, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, 8000, South Africa

autor

du Plessis H.W.

• Post-Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Private Bag X5026, Stellenbosch, 7599, South Africa

autor

Chidi B.S.

• Post-Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Private Bag X5026, Stellenbosch, 7599, South Africa
• Bioresource Engineering Research Group (BioERG), Department of Biotechnology, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, 8000, South Africa

autor

Hutchinson U.I.

• Post-Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Private Bag X5026, Stellenbosch, 7599, South Africa
• Bioresource Engineering Research Group (BioERG), Department of Biotechnology, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, 8000, South Africa

autor

Ntwampe K.S.

• Bioresource Engineering Research Group (BioERG), Department of Biotechnology, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, 8000, South Africa
• Center of Excellence in Carbon-Based Fuels, School of Chemical and Minerals Engineering, North-West University, Private Bag X1290, Potchefstroom 2520, South Africa

autor

Okudoh V.I.

• Bioresource Engineering Research Group (BioERG), Department of Biotechnology, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, 8000, South Africa

autor

Jolly N.P.

• Post-Harvest and Agro-Processing Technologies, ARC Infruitec-Nietvoorbij (The Fruit, Vine and Wine Institute of the Agricultural Research Council), Private Bag X5026, Stellenbosch, 7599, South Africa

Identyfikatory

DOI

10.31883/pjfns/139278