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Wyświetlanie 1-2 z 2
Tytuł:
Physiological and Antagonistic Properties of Pichia kluyveri for Curative and Preventive Treatments Against Post-Harvest Fruit Fungi
Autorzy:
Mewa Ngongang, Maxwell
Du Plessis, Heinrich W.
Boredi, Chidi S.
Hutchinson, Ucrecia F.
Ntwampe, Karabo S.
Okudoh, Vincent I.
Jolly, Neil P.
Powiązania:
https://bibliotekanauki.pl/articles/1363256.pdf
Data publikacji:
2021-07-20
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
biocontrol
Botrytis cinerea
Monilinia laxa
spoilage
antagonistic yeast
Opis:
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.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 3; 245-253
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control of Mould Spoilage on Apples Using Yeasts as Biological Control Agents
Autorzy:
Gomomo, Zukisani
Fanadzo, Morris
Mewa-Ngongang, Maxwell
Hoff, Justin
Van der Rijst, Marieta
Okudoh, Vincent
Kriel, Johan
du Plessis, Heinrich W.
Powiązania:
https://bibliotekanauki.pl/articles/2051045.pdf
Data publikacji:
2022-05-31
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
mould spoilage
fungicides
postharvest control
biocontrol agents (BCAs)
apples
yeast
Opis:
Considerable quantities of fruit are lost during pre- and post-harvest stages due to mould spoilage. The aim of this study was to evaluate the antagonistic effect of selected yeasts against spoilage mould Botrytis cinerea, Penicillium expansum and Alternaria alstroemeriae. One hundred and four yeast isolates were screened for antagonistic activity against B. cinerea, P. expansum and A. alstroemeriae using radial inhibition, dual and mouth-to-mouth plate assays. Sixty-seven out of 104 yeasts showed growth inhibition activity against P. expansum, while 36 yeasts inhibited B. cinerea, 47 yeasts inhibited A. alstroemeriae, but only 22 yeasts showed inhibition activity against all three moulds. Candida pyralidae Y63, Meyerozyma guilliermondii Y88 and Zygoascus hellenicus Y89 showed highest inhibition activity against all three moulds, when mode of inhibition was due to direct contact. Volatile organic compounds produced by Pichia kluyveri Y64, C. pyralidae Y63 and M. guilliermondii Y88 showed the highest growth inhibition against all three moulds. These yeasts were also evaluated against all three moulds on apples. P. kluyveri Y64 showed 100%, 57% and 26% growth inhibition against A. alstroemeriae, B. cinerea and P. expansum, respectively, on apples and performed slightly better than a commercial fungicide against B. cinerea and P. expansum. While M. guillermondii Y88 showed 100%, 60% and 18% inhibition on apples against A. alstroemeriae, B. cinerea and P. expansum, respectively. P. kluyveri Y64 and M. guilliermondii Y88 showed potential as biofungicides and warrant further investigation.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2022, 72, 2; 119-128
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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