Efficacy of plant extracts for management of post-harvest sour rot of Kinnow fruits

2020 ◽  
Vol 35 (2) ◽  
pp. 97-102
Author(s):  
R.N. Sharma ◽  
R.P. Maharshi
Keyword(s):  
Plant Extracts ◽  
Post Harvest ◽  
Sour Rot

scholarly journals First Report of Sour Rot on Post-harvest Oriental Melon, Tomato, Cucumber, Potato, Pumpkin and Carrot Caused by Geotrichum candidum

2011 ◽  
Vol 17 (2) ◽  
pp. 232-234 ◽  
Author(s):  
Yong-Ki Kim ◽  
Taek-Soo Kim ◽  
Hong-Sik Shim ◽  
Kyung-Seok Park ◽  
Wan-Hae Yeh ◽  
...  
Keyword(s):  
Geotrichum Candidum ◽  
First Report ◽  
Post Harvest ◽  
Sour Rot ◽  
Oriental Melon

scholarly journals Impact of Pre- and Post–Harvest Applications of Natural Antimicrobial Products on Apple and Pear Soft Rot Disease

2016 ◽  
Vol 4 (3) ◽  
pp. 105-119
Author(s):  
Abdelradi T. Bakeer ◽  
Khaled Elbanna ◽  
Sameh A. Elnaggar
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts ◽  
Antimicrobial Agents ◽  
Soft Rot ◽  
Natural Antimicrobial ◽  
Soft Rot Disease ◽  
Post Harvest ◽  
Rot Disease ◽  
Bacillus Strains

Three natural antibacterial compounds including bacteriocin like substance (BLS) produced from lactic acid bacteria (LAB), ethanolic extract of propolis (EEP), and nine plant extracts were evaluated against soft rot Bacillus strains. Testing in vivo these compounds were evaluated to control pear and apple soft rot disease. Among eight BLS tested, BLS of LAB2, LAB105 and LAB 107 exhibited the highest antibacterial activity as indicated by the formation of clear inhibition zone. Propolis extracts exhibited significant antibacterial activity against all tested soft rot Bacillus strains and it was noticed that the antibacterial activity was concentration dependent. Among nine plant extracts tested, extracts of Eucalyptus globulus and Psidium guajava exhibited the highest antibacterial activity. All tested antibacterial products significantly decreased apple and pear soft rot severity caused by Bacillus altitudinis compared to untreated control. The highest reduction percentage of soft rot severity was recorded for EEP followed by BLS from LAB and plant extracts tested, respectively. Combined pre-and post-harvest treatments of apple and pear with antimicrobial compounds proved to be more effective in reducing the soft rot severity and improved the physical and chemical properties of fruits during storage in both years of the study. The natural antimicrobial agents used in this study were promising compounds, since it seems to be more safe, economical and great potential for extending the shelf life and improve the quality of fruits. Therefore, the application of these compounds in the control of apple and pear soft rot could be advantageous for consumers, producers, and the environment.

scholarly journals Use of Plant Extracts in the Control of Post-Harvest Fungal Rots in Apples

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
EL ALAMI Nabila ◽  
EL ATTARI Soufiyan
Keyword(s):  
Plant Extracts ◽  
Pathogen Resistance ◽  
Economic Losses ◽  
Consumer Health ◽  
Higher Plant ◽  
New Approach ◽  
Post Harvest ◽  
In Situ Experiments

Different fungi alter apples in the post-harvest period, causing considerable economic losses and risks to consumer health due to the mycotoxins that some of these fungi produce. The control of these fungal alterations in apples is mainly dependent on the use of chemical fungicides, the effectiveness of which has been well proven. However, this use is subject to restrictions due to growing concerns about risks to human health and the environment and the continued development of pathogen resistance to commonly used fungicides. A new approach to control post-harvest fungi has been implemented through the application of plant extract.It is estimated that there are more than 250,000 higher plant species on Earth that can be evaluated for their antimicrobial bioactive chemical compounds. In recent decades, researchers have evaluated plant extracts and essential oils against fungi responsible for post-harvest apple rot. Interesting results have been obtained. The purpose of this project is to summarize and discuss the results of in vitro and in situ experiments of different literatures concerning the effects of compounds derived from plants on the control of fungi responsible for rotting apples in storage.

scholarly journals Ripening regulation and post-harvest life improvement of banana cv. MALBHOG using plant extracts and modified atmosphere package

2017 ◽  
Vol 12 (2) ◽  
pp. 255-259
Author(s):  
UMESH TIMILSINA ◽  
ARJUN KUMAR SHRESHTA ◽  
ARBIND SRIVASTAVA ◽  
BISHAL SHRESTHA
Keyword(s):  
Plant Extracts ◽  
Modified Atmosphere ◽  
Post Harvest ◽  
Life Improvement

scholarly journals Biocontrol of Fungi Associated with Onion (Allium cepa) Bulb Rot during Post Harvest

2020 ◽  
pp. 1-7
Author(s):  
Theresa E. Omara- Achong ◽  
Peggy A. Okey ◽  
Edward N. Okey ◽  
Patience M. Ukpong
Keyword(s):  
Growth Inhibition ◽  
Allium Cepa ◽  
Plant Extracts ◽  
Onion Bulb ◽  
Phytochemical Analysis ◽  
In Vitro Testing ◽  
Post Harvest ◽  
Bulb Rot

Post-harvest deterioration is a major problem of onions (Allium cepa) in Nigeria. The use of chemicals has been the main control measure. Chemicals are hazardous and environmentally unfriendly. There is therefore, a need for search for effective bio-pesticides as alternatives. A survey of fungal onions diseases was conducted in two markets in Mkpat Enin Local Government Area, Akwa Ibom State, Nigeria. Two hundred onions bulbs (100 from each market) were collected separately from the two markets. The collected bulbs were put into separate polythene bags before taken to the laboratory for macroscopic and microscopic examinations. Fungal isolates were obtained from naturally infected bulbs and their pathogenicity confirmed using Kochs’ postulate. In vivo and in vitro testing based on growth inhibition were also carried out to determine the efficacy of the aqueous plant extracts. Phytochemical analysis of alcohol extracts was conducted following standard procedures. Results of market surveys indicated disease incidences of 26% and 23% from Akpaden and Ukam markets, respectively. Three fungal species were isolated and identified as Botrytis allii, Fusarium oxysporum and Alternaria porri. Pathogenicity tests confirmed these isolates to be common agents of onion bulb rot. In vitro testing of Chromolaena odorata and Mangiferia indica leaf extracts at 10, 20 and 30% concentrations showed inhibitory effects of both extracts with increasing concentrations on the pathogens. C. odorata extracts indicated significantly higher inhibition, compared to M. indica. In vivo tests of the extracts also showed a significant growth inhibition of the pathogens on onion bulb rot, compared to the control. Phytochemical screening of the extracts indicated the presence of tannins, saponins, polyphenols and flavonoids. The antifungal activities of these extracts and their availability makes them potential control agents of fungal onion rot. C. odorata and M. indica plant extracts should therefore, be further explored as alternatives bio-control agents or onions fungal rot.

scholarly journals Bioefficacy of Selected Plant Extracts against Sitophilus zeamais on Post-Harvest Management of Zea mays

2018 ◽  
Vol 7 (4) ◽  
pp. 384-391
Author(s):  
SM Kaguchia ◽  
◽  
SM Gitahi ◽  
CL Thoruwa ◽  
JK Birgen ◽  
...  
Keyword(s):  
Weight Loss ◽  
Zea Mays ◽  
Essential Oil ◽  
Plant Extracts ◽  
Sitophilus Zeamais ◽  
Aqueous Extracts ◽  
Harvest Management ◽  
Post Harvest ◽  
Synthetic Chemicals ◽  
On Farm

Maize (Zea mays L.) is the most important cereal crop in Kenya with 90% of the total population relying on it as the main staple food. Post-harvest loss in maize is caused by insect pests such Sitophilus zeamais and Larger grain borer and the can sometimes be up to 90 percent. Synthetic chemicals are used to manage weevil infestation in maize. However, chemical residues have been detected on the stored maize prior to consumption. Additionally, continuous uses of synthetic chemicals have led to development of pest resistance reducing their effectiveness. This study therefore sought to evaluate a possible use of Ocimum kilimandscharicum essential oil to manage Sitophilus zeamais. The study also determined the effect of pretreating baglets with aqueous extracts of A. indica and W. ugandensis to enhance efficacy of O. kilimandscharicum oil. Laboratory experiments were carried out to establish insecticidal property of O. kilimandscharicum oil. Additionally, on farm experiments were carried out to establish the oil’s effectiveness and longevity. Maize grains were treated with O. kilimandscharicum oil in the first experiment and in the second treated maize grains were put in miniature synthetic bags treated with aqueous extracts of A. indica and W. ugandensis and stored in a granary for six months. On-farm experiment revealed that O. kilimandscharicum oil doses were effective against S. zeamais as compared with untreated maize grains. However, 10 ml per 1kg of maize grains was the best dosage. Weight loss in maize grains was proportional to the number of holed grains. Replenishment of the oil after the third month (at 6 ml, 8 ml and 10 ml) reduced significantly (p<0.0001) the number of holed grains as well as weight loss. Pretreatment of baglets containing maize grains with aqueous extracts of A. indica and W. ugandensis significantly improved protection of maize grains treated with O. kilimandscharicum oil. From the results of this study it can be concluded that plant extracts can offer a possible substitute to synthetic chemicals in post-harvest management of S. zeamais in stored maize. Use of essential oil of O. kilimandscharicum for post-harvest protection of maize grains against S. zeamais is therefore recommended

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