Evaluation of the use of sodium bicarbonate, potassium sorbate and yeast antagonists for decreasing postharvest decay of sweet cherries

Potassium phosphite (KP) concentrations that inhibited the germination of 50% of Penicillium digitatum conidia were 229, 334, 360, 469, 498, or 580 mg/liter at pH 3, 4, 5, 6, 7, or 8, respectively. Increasing phosphate content in media reduced phosphite toxicity. To control green or blue mold, fruit were inoculated with P. digitatum or P. italicum, then immersed 24 h later in KP, calcium phosphite (CaP), sodium carbonate, sodium bicarbonate, or potassium sorbate for 1 min at 20 g/liter for each at 25 or 50°C. Mold incidence was lowest after potassium sorbate, CaP, or KP treatments at 50°C. CaP was often more effective than KP but left a white residue on fruit. KP was significantly more effective when fruit were stored at 10 or 15°C after treatment compared with 20°C. Acceptable levels of control were achieved only when KP was used in heated solutions or with fungicides. KP was compatible with imazalil (IMZ) and other fungicides and improved their effectiveness. KP increased thiabendazole or IMZ residues slightly. Phosphite residues did not change during storage for 3 weeks, except they declined when KP was applied with IMZ. KP caused no visible injuries or alteration in the rate of color change of citrus fruit in air or ethylene at 5 μl/liter.

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Sodium bicarbonate reduces postharvest decay development on melons

Postharvest Biology and Technology ◽

10.1016/s0925-5214(97)01412-9 ◽

1997 ◽

Vol 10 (3) ◽

pp. 201-206 ◽

Cited By ~ 52

Author(s):

Y. Aharoni ◽

E. Fallik ◽

A. Copel ◽

M. Gil ◽

S. Grinberg ◽

...

Keyword(s):

Sodium Bicarbonate ◽

Postharvest Decay ◽

Decay Development

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Effects of Hanseniaspora uvarum Integrated with Salicylic Acid or Sodium Bicarbonate on Postharvest Decay of Grapes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.1780 ◽

2013 ◽

Vol 781-784 ◽

pp. 1780-1785 ◽

Cited By ~ 2

Author(s):

Xiao Jie Qin ◽

Hong Mei Xiao ◽

Li Liu ◽

Jin Xiang Gao ◽

Xiao Xia Wang ◽

...

Keyword(s):

Salicylic Acid ◽

Sodium Bicarbonate ◽

Titratable Acidity ◽

Grey Mould ◽

Integrated Approach ◽

Soluble Solids ◽

Postharvest Decay ◽

Hanseniaspora Uvarum ◽

Grape Fruit ◽

Experimental Trials

This study was conducted to investigate the application of the antagonistic yeast strain ofHanseniaspora uvarumcombined with salicylic acid (SA) and sodium bicarbonate (SBC) to create an efficient integrated approach to control grey mould on grapes. The results indicated that the treatment of 1×108CFU/mlH. uvarumcombined with SA at 2 mM and combined with SBC at 2% resulted in a remarkably improved control ofB. cinereainfections on grapes at 25°C,RH 95%. In experimental trials, the average lesion diameter of the samples treated withH.uvarumplus 2 mM SA andH. uvarumplus 2% SBC after 3 days were both 0.81 cm, which were significantly smaller compared with that of the samples treated withH. uvarumindividually (0.891 cm; 0.9 cm) and with sterile distilled water (1.318 cm; 1.36 cm). Furthermore, integration ofH. uvarumwith SA and with SBC both significantly reduced the decay rate, leave rate, weight loss while maintained the firmness, titratable acidity (TA), total soluble solids (TSS) of the grapes. The proper combination of antagonist yeasts and chemical reagent can thus provide an effective strategy to reduce postharvest decay of grape fruit.

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Postharvest Application of Organic and Inorganic Salts for Suppression of Silver Scurf on Potato Tubers

Plant Disease ◽

10.1094/pdis.1998.82.2.213 ◽

1998 ◽

Vol 82 (2) ◽

pp. 213-217 ◽

Cited By ~ 58

Author(s):

Claudia Olivier ◽

Donald E. Halseth ◽

Eduardo S. G. Mizubuti ◽

Rosemary Loria

Keyword(s):

Sodium Bicarbonate ◽

Disease Severity ◽

Ammonium Bicarbonate ◽

Potassium Bicarbonate ◽

Postharvest Disease ◽

Inorganic Salts ◽

Potassium Sorbate ◽

Silver Scurf ◽

Potato Tubers ◽

Pathogen Suppression

Seven organic and inorganic salts were tested for suppression of silver scurf, a postharvest disease of potato tubers caused by Helminthosporium solani. Potassium sorbate, calcium propionate, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, and ammonium bicarbonate were added to V8 agar at concentrations of 0.06–0.2 M. Radial growth of H. solani was significantly reduced (P < 0.05) by all salts at all concentrations. All salts except sodium bicarbonate and potassium bicarbonate were fungicidal at 0.2 M. Effects of postharvest salt treatments on disease severity and sporulation of H. solani on inoculated and naturally infected potato tubers were evaluated in separate experiments. Greenhouse-grown tubers were inoculated with H. solani spore suspensions (2 × 105 spores/ml), incubated for 5 days, dipped into 0.2 M solutions of each of the salts, and incubated in a moist chamber at 22–24°C for 6 weeks. All salt treatments prevented lesion development and sporulation of H. solani and differed significantly (P < 0.05) from the control. Postharvest applications of test compounds (0.2M) also significantly (P < 0.05) reduced disease severity and H. solani sporulation on naturally infected, field-grown tubers after 15 weeks of storage at 10°C. Salt treatments did not differ in disease or pathogen suppression. These relatively nontoxic organic and inorganic salts have potential as postharvest applications for control of silver scurf.

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Combination of hot water, Bacillus amyloliquefaciens HF-01 and sodium bicarbonate treatments to control postharvest decay of mandarin fruit

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2013.10.004 ◽

2014 ◽

Vol 88 ◽

pp. 96-102 ◽

Cited By ~ 32

Author(s):

Peng Hong ◽

Weining Hao ◽

Jianjun Luo ◽

Shaohua Chen ◽

Meiying Hu ◽

...

Keyword(s):

Sodium Bicarbonate ◽

Bacillus Amyloliquefaciens ◽

Hot Water ◽

Postharvest Decay

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

Acta Horticulturae ◽

10.17660/actahortic.2017.1161.84 ◽

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

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Evaluation of different salts for the control of lettuce varnish spot: when phytotoxicity rules

Canadian Journal of Plant Science ◽

10.1139/cjps-2017-0237 ◽

2018 ◽

Vol 98 (3) ◽

pp. 753-761 ◽

Cited By ~ 4

Author(s):

Maxime Delisle-Houde ◽

Vicky Toussaint ◽

Hicham Affia ◽

Russell J. Tweddell

Keyword(s):

Sodium Bicarbonate ◽

Sodium Carbonate ◽

Sodium Benzoate ◽

Leaf Tissue ◽

In Vitro Assays ◽

Potassium Sorbate ◽

Sodium Metabisulfite ◽

Pseudomonas Cichorii ◽

Foliar Symptoms

Five generally recognised as safe (GRAS) salts with antimicrobial activity were investigated for their potential use as bactericides for the control of lettuce varnish spot [Pseudomonas cichorii (Swingle) Stapp]. The phytotoxicity of salts was first assessed using greenhouse and in vitro assays. Greenhouse assays revealed that salts showed different levels of phytotoxicity. Potassium sorbate, sodium benzoate, and sodium carbonate at higher concentrations caused a noticeable decrease of growth along with foliar phytotoxicity symptoms while sodium metabisulfite and sodium bicarbonate caused exclusively foliar symptoms. Based on the phytotoxic doses 5% determined in vitro, salts can be ranked in ascending order of phytotoxicity as follows: sodium bicarbonate, potassium sorbate, sodium carbonate, sodium benzoate, and sodium metabisulfite. When applied at concentrations causing mild to moderate foliar symptoms of phytotoxicity and no noticeable effect on growth, salts did not significantly affect (p ≤ 0.01) survival of P. cichorii on lettuce leaf tissue and did not significantly reduce (p ≤ 0.01) varnish spot severity. Although sodium metabisulfite was applied at concentrations higher than the minimum inhibitory concentration and minimum bactericidal concentration, it did not affect P. cichorii survival on leaf tissue.

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