Application of microbial antagonists in combination with sodium bicarbonate to control postharvest diseases of sweet cherries

2017 ◽  
pp. 529-534
Author(s):  
J. Delgado-Adámez ◽  
G. Fuentes-Pérez ◽  
B. Velardo-Micharet ◽  
D. González-Gómez
Keyword(s):  
Sodium Bicarbonate ◽  
Postharvest Diseases ◽  
Sweet Cherries

scholarly journals EFFECT OF CONVENTIONAL AND ALTERNATIVE PRODUCTS ON POSTHARVEST DISEASE CONTROL IN AVOCADOS

2018 ◽  
Vol 40 (1) ◽  
Author(s):  
Ivan Herman Fischer ◽  
Matheus Froes de Moraes ◽  
Maria Cecília de Arruda Palharini ◽  
Mirian de Souza Fileti ◽  
Juliana Cristina Sodário Cruz ◽  
...  
Keyword(s):  
Essential Oil ◽  
Sodium Bicarbonate ◽  
Disease Control ◽  
Chlorine Dioxide ◽  
Physicochemical Characterization ◽  
Soluble Solids ◽  
Postharvest Disease ◽  
Postharvest Diseases ◽  
Lemon Grass ◽  
Thyme Essential Oil

ABSTRACT Postharvest diseases constitute a serious problem for avocado commercialization. Thus, the present study aimed to evaluate the effect of conventional and alternative products in controlling diseases affecting ‘Hass’ avocados in the field and in the postharvest by carrying out physicochemical characterization of fruits subjected to postharvest treatments. In the field, besides the management adopted by the farmer, seven products were sprayed three times during fruiting for evaluation. Postharvest products were diluted in water or in oxidized polyethylene wax and shellac. Water treatments with potassium phosphite, Soil-Set®, chlorine dioxide, thyme essential oil, sodium bicarbonate, lemon grass essential oil and thiabendazole reduced the incidence of diseased fruits, and anthracnose, the main disease, was controlled with sodium bicarbonate, lemon grass essential oil and thiabendazole. Greater soluble solids content was found for control (water), chlorine dioxide, acibenzolar-S-methyl and thiabendazole. For the products that reduced anthracnose, there was no correlation between the disease and the physicochemical parameters, evidencing that the disease control is not associated with delayed ripening. For wax treatments, diseases were not controlled, and the fruits presented lower titratable acidity with thyme essential oil, sodium bicarbonate, control (wax), acibenzolar-S-methyl and lemon grass essential oil. Control and thyme essential oil were highlighted for maintaining the green coloration of the fruit skin for the shortest period. Under field conditions, azoxystrobin, thiabendazole, difenoconazole+azoxystrobin and acibenzolar-S-methyl+azoxystrobin reduced the occurrence of diseased fruits, while anthracnose control was only obtained with azoxystrobin.

Effect of an Antimicrobial Packaging on Postharvest Quality of Sweet Cherry

2012 ◽  
Vol 200 ◽  
pp. 249-253
Author(s):  
Xue Mei Yu ◽  
Wen Cai Xu ◽  
Dong Li Li
Keyword(s):  
Fungal Pathogens ◽  
Storage Time ◽  
Sweet Cherry ◽  
Storage Period ◽  
Postharvest Quality ◽  
Postharvest Diseases ◽  
Antimicrobial Packaging ◽  
Sweet Cherries ◽  
Postharvest Treatment

Sweet cherry shows a limited storage time mainly due to incidence of decay and a fast loss of sensory quality of the fruit. Sweet cherries may be damaged seriously by fungal pathogens for a long storage period. For the control of postharvest diseases, the use of chemicals as fungicides has been applied to sweet cherries. In this paper, a kind of antimicrobial packaging, based on our patent , which can release SO2fungicide has been used as postharvest treatment to protect the sweet cherry quality. Cherries quality during storage was determined, and results suggest that SO2 fungicide packaging showed benefits in terms of lower weight loss, lowerSuperscript textdecay rate and maintenance of fruit firmness compared with the control one.

scholarly journals Near-Harvest Applications of Metschnikowia fructicola, Ethanol, and Sodium Bicarbonate to Control Postharvest Diseases of Grape in Central California

Plant Disease ◽  
2003 ◽  
Vol 87 (11) ◽  
pp. 1384-1389 ◽  
Author(s):  
Ozgur Akgun Karabulut ◽  
Joseph L. Smilanick ◽  
Franka Mlikota Gabler ◽  
Monir Mansour ◽  
Samir Droby
Keyword(s):  
Aspergillus Niger ◽  
Sodium Bicarbonate ◽  
Botrytis Cinerea ◽  
Gray Mold ◽  
Postharvest Diseases ◽  
Bacterial Populations ◽  
Central California ◽  
Table Grapes ◽  
Metschnikowia Fructicola

The yeast Metschnikowia fructicola, ethanol, and sodium bicarbonate (SBC), alone or in combinations, were applied to table grapes on vines 24 h before harvest to control the incidence of postharvest diseases. In four experiments, all significantly reduced the total number of decayed berries caused by Botrytis cinerea, Alternaria spp., or Aspergillus niger after storage for 30 days at 1°C followed by 2 days at 20°C. In three experiments, a mean gray mold incidence (caused by B. cinerea) of 34.2 infected berries per kilogram among untreated grape was reduced by Metschnikowia fructicola at 2 × 107 CFU/ml, ethanol at 50% (vol/vol), or SBC at 2% (wt/vol) to 12.9, 8.1, or 10.6 infected berries per kilogram, respectively. Ethanol, SBC, and SO2 generator pads were similarly effective. M. fructicola effectiveness was not improved when combined with ethanol or SBC treatments. Ethanol and yeast treatments did not harm the appearance of the grapes. M. fructicola and SBC left noticeable residues, and SBC caused some visible phytotoxicity to the rachis and berries. Ethanol applied at 50% (vol/vol) reduced epiphytic fungal and bacterial populations by about 50% compared with controls. M. fructicola populations persisted on berries during storage when applied alone or after ethanol treatments, whereas SBC reduced its population significantly.

Ultrastructure of the basal body apparatus in epidermal cells of a sponge larva (Aplysilla SP: Demospongiae)

1992 ◽  
Vol 50 (1) ◽  
pp. 928-929
Author(s):  
R.L. Pinto ◽  
R.M. Woollacott
Keyword(s):  
Sodium Bicarbonate ◽  
Epoxy Resin ◽  
Basal Body ◽  
Phosphate Buffer ◽  
Similar Data ◽  
Basal Apparatus ◽  
Striated Rootlet ◽  
The Common ◽  
Basal Foot ◽  
Sexually Mature

The basal body and its associated rootlet are the organelles responsible for anchoring the flagellum or cilium in the cytoplasm. Structurally, the common denominators of the basal apparatus are the basal body, a basal foot from which microtubules or microfilaments emanate, and a striated rootlet. A study of the basal apparatus from cells of the epidermis of a sponge larva was initiated to provide a comparison with similar data on adult sponges.Sexually mature colonies of Aplysillasp were collected from Keehi Lagoon Marina, Honolulu, Hawaii. Larvae were fixed in 2.5% glutaraldehyde and 0.14 M NaCl in 0.2 M Millonig’s phosphate buffer (pH 7.4). Specimens were postfixed in 1% OsO4 in 1.25% sodium bicarbonate (pH 7.2) and embedded in epoxy resin. The larva ofAplysilla sp was previously described (as Dendrilla cactus) based on live observations and SEM by Woollacott and Hadfield.

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