Application of lemongrass oil in vapour phase for the effective control of anthracnose of ‘Sekaki’ papaya

Ali, Asgar; Pheng, T. Wee; Mustafa, Maysoun A.

doi:10.1111/jam.12782

Cited by 56 publications

(35 citation statements)

References 37 publications

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“…Therefore, biological control appears to be beneficial in reducing effects of witches' broom disease to economically viable levels and in decreasing the use of chemical fungicides that may cause collateral damage [6] .The chemical components occurring naturally in variety of plants in Brazilian ecosystems are a potential source of bioactive materials [20]. Plant metabolites and plant-based pesticides and fungicides increasingly appear to be a promising alternative to synthetic pesticides as their application promises minimal environmental impact [21,22]. Therefore, they are helpful for the development of effective products for pest control [23], including pathogenic fungi [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Antifungal Potential of Terpenes from Spondias Purpurea L. Leaf Extract against Moniliophthora Perniciosa that causes Witches Broom Disease of Theobroma Cacao

Pungartnik¹

2017

IJCAM

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The present in vitro study evaluates antifungal properties of Spondias purpurea plant extract against Moniliophthora perniciosa. Fractions of Ethanol Crude Extracts (CE) from S. purpurea were tested for their antifungal activity. CE inhibited mycelial growth of M. perniciosa by 60%at a dose of 10 mg/mL, while survival of broken hyphae of the fungus was inactivated by 90% at a dose of 8 mg/mL. Fractionation of CE yielded a terpene containing sub fraction (FA) with the highest fungicidal activity. FA acted as oxidant and its application induced oxidative stress in M. perniciosa that may be the responsible for the observed induced cell death. The chromatographic profile obtained with FA of S. purpurea revealed a variety of terpenes, which included Spathulenol (14.2%), Linolenic acid (8.4%), trans Caryophyllene (6.9%), and Alpha-muurolene (6.9%).This study describes for the first time effects of terpenes of S. purpurea related to induced oxidative stress in fungus. S. purpurea, therefore, may be a natural source for isolation of antifungal compounds against M. perniciosa. This characteristic may be useful in application as botanical fungicide in biological control.

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Section: Introductionmentioning

confidence: 99%

Antifungal Potential of Terpenes from Spondias Purpurea L. Leaf Extract against Moniliophthora Perniciosa that causes Witches Broom Disease of Theobroma Cacao

Pungartnik¹

2017

IJCAM

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“…The propolis extract coatings showed lower permeability to water vapor between the fruit and the medium until the 18 th day of storage, thereby reducing the weight loss of oranges. Ali et al (2015b) also observed an highest percentage weight (19.1%) in peppers coated with ethanol under refrigeration conditions at 13°C and RH 90%, while control fruits and coated with 1% and 5% ethanolic extract propolis did not differ (17.2, 18 and 16.85%, respectively). However, pitaya coated with 0.5% ethanol extract of propolis showed a 13% weight loss when stored at 20 ± 2°C and 80 ± 5% RH for 20 days of storage (Zahid et al, 2013).…”

Section: Resultsmentioning

confidence: 82%

“…In a few years, propolis has also been evaluated to improve quality of coatings. The hydrophobic compounds of propolis, as waxes and essential oils, acts as a barrier to water vapor and gas exchange (Ali et al, 2015b(Ali et al, , 2014Carvalho et al, 2013;Zahid et al, 2013) and possess broad spectrum of antimicrobial activity (Ali et al, 2015b(Ali et al, , 2014.…”

Section: Author(s) Agree That This Article Remain Permanently Open Acmentioning

confidence: 99%

Propolis extract coated in Pera orange fruits: An alternative to cold storage

Passos¹,

Mendes²,

Cunha³

et al. 2016

Afr. J. Agric. Res.

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Orange (Citrus sinensis) is a non-climacteric fruit that can be stored for long periods. However, the development of physiological and phytopathological disorders limits its postharvest storage. The objective of this study was to evaluate the effects of coating orange with propolis extract on the physicochemical characteristics of the "Pera" orange during storage under ambient temperature. The fruits were selected and submitted to five postharvest treatments, three different forms of dip coating (70% alcohol, hydroalcoholic extract of propolis to 2.5%, hydroalcoholic extract of propolis to 5%), and two controls (one uncoated and one uncoated fruit kept under refrigeration). The variables weight loss, firmness, total soluble solid (TSS), titratable acidity (TA), ratio TSS/TA, and hydrogenic potential (pH) were evaluated at 0, 10, 18, and 25 days of storage. Treatment with propolis extract coating reduced the weight loss until the 18th day of storage. The fruit coated with propolis extract remained firmer up to 25 days of storage; this result is not significantly different from that of other postharvest treatments. The postharvest "refrigerated" treatment showed lesser weight loss and firmness during the storage period as a result of chilling injury. Coating with propolis extracts resulted in significant alterations of small magnitude in the variables TSS, TA, TSS/TA, and pH in oranges at the end of the storage period.

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“…The disc diffusion method, however, may present a problem, as EOs are hydrophobic, and volatile components have low water solubility in media (Nedorostova et al, 2009;Tajkarimi et al, 2010). In contrast, the volatilisation method is considered suitable (Nedorostova et al, 2009;Ali et al, 2015;Perumal et al, 2016;Shahabi et al, 2017) for determining antimicrobial activity and obtaining minimal inhibitory concentration (MIC) or minimum bactericidal concentration (MBC), which represents the lowest concentration of EO required to inhibit target microorganisms (Dannenberg et al, 2016;Lu et al, 2016;Alejo-Armijo et al, 2017). The screening method is not standardised for comparing liquid and vapour phases of EO (Tyagi & Malik, 2011;Boukhatem et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobia activity of garlic (Allium sativum L.) and holy basil (Ocimum sanctum L.) essential oils applied by liquid vs. vapour phases

Torpol

Wiriyacharee

Sriwattana

et al. 2018

Int J of Food Sci Tech

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Summary Antimicrobial activity of garlic (Allium sativum L.) and holy basil (Ocimum sanctum L.) essential oils (GEO and HBEO, respectively) was evaluated in liquid vs. vapour phases. Diallyl disulphide and diallyl trisulphide in GEO while eugenol, caryophyllene and methyl eugenol in HBEO were predominant active compounds. Individually, GEO was highly effective in the vapour phase, showing the greatest antimicrobial activity (P ≤ 0.05) against Bacillus cereus and Staphylococcus aureus with complete inhibition, followed by Salmonella typhimurium and Pseudomonas fluorescens, but had no effect on Escherichia coli, Lactobacillus plantarum or Listeria monocytogenes. The combined GEO:HBEO (a 1:1 ratio) at 30 μL demonstrated inhibitive activity against all bacteria tested with complete inhibition against B. cereus and S. aureus. Minimum bactericidal concentration (MBC) of the combined oil was <0.4% v/v, except for P. fluorescens requiring a higher MBC (1.5%, v/v). This study demonstrated potential of the combined GEO:HBEO to be used for food preservation applications.

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Application of lemongrass oil in vapour phase for the effective control of anthracnose of ‘Sekaki’ papaya

Abstract: The potential practical application of this technology can reduce reliance on synthetic fungicides for the control of postharvest diseases in papaya.

Cited by 56 publications

References 37 publications

Antifungal Potential of Terpenes from Spondias Purpurea L. Leaf Extract against Moniliophthora Perniciosa that causes Witches Broom Disease of Theobroma Cacao

Antifungal Potential of Terpenes from Spondias Purpurea L. Leaf Extract against Moniliophthora Perniciosa that causes Witches Broom Disease of Theobroma Cacao

Propolis extract coated in Pera orange fruits: An alternative to cold storage

Antimicrobia activity of garlic (Allium sativum L.) and holy basil (Ocimum sanctum L.) essential oils applied by liquid vs. vapour phases

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