Alterações nas características físicas do maracujá-doce submetido à imersão em solução de cloreto de cálcio

Silva, Alessandra Pereira da; Vieites, Rogério Lopes

doi:10.1590/s0101-20612000000100012

Cited by 5 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In fruits of yellow-passionfruit, the results obtained in this study showed that there is no influence of Ca or in association with phosphites in the physico-chemical characteristics analyzed (FML, TSS, pH and TA). These results corroborate the ones observed by Silva and Vieites (2000) which, using CaCl 2 (1 to 4%) in sweet-passionfruit, submerged by 2 hours and stored under refrigeration (9° C; 85-90% RH) for 30 days, observed that there was no significant effect on the FML and physicochemical characteristics of the fruit.…”

Section: Physico-chemical Analysis Of Yellow-passionfruitsupporting

confidence: 91%

Use of phosphites in postharvest to control anthracnose of yellow passionfruit

Dutra

Blum

2019

Biosci. J.

View full text Add to dashboard Cite

Brazil is the largest producer of yellow passionfruit (Passiflora edulis f. flavicarpa) and one of its production problems is the anthracnose (Colletotrichum spp.). The use of fungicides on control of postharvest diseases is a method that protects the fruits during storage. However, precautions must be taken due to fungicide toxicity. The restriction to the use of fungicides in post-harvest led a demand for alternative methods of disease control, and, the phosphite application is one of these methods. Therefore, this work aimed to evaluate the effects of fruit immersion in phosphite on postharvest control of anthracnose. Two tests were developed in vitro to assess the effect on the fungus: phosphite Mg2 (40%P2O5+6%Mg), Zn (40%P2O5+10%Zn), Ca1 (30%P2O5+7%Ca) and K1 (40%P2O5+20%K2O). For the in vivo tests, passionfruit (Gigante Amarelo), were wounded and inoculated (50mL; 106conidia mL-1). Two tests were done with: Cu (25%P2O5+5%Cu), 2.5mL L-1; Zn, 2.5mL L-1; K1, 2.5mL L-1; Mg1 (30%P2O5+4%Mg), 3mL L-1; Ca1, 3mL L-1; Ca2 (10%P2O5+6%Ca), 4mL L-1; K2 (40%P2O5+20%K2O), 1.5mL L-1; Mg2 (40%P2O5+6%Mg), 1.5mL L-1; K3 (20%P2O5+20%K2O) 1.75 mL L-1; K4 (30%P2O5+20%K2O), 1.75mL L-1. Other two tests with phosphites Mg2, Ca1, Zn and K1 were with CaCl2 (2%) was developed. In addition, phosphites were tested at 25, 50, 100 and 200% of the dose: K2 (100%; 1.5mL L-1) and Ca1 (100%; 3 mL L-1). The phosphites Mg2, Ca1, K1 and Zn in vitro have reduced mycelial growth and fungus conidia production. The phosphites K1, K2, Ca1 and Zn were the ones that most reduced the size of the anthracnose lesion. There were no differences among treatments, concerning the physico-chemical fruit properties analyzed (% fresh mass loss, total soluble solids, pH and titratable acidity).

show abstract

Section: Physico-chemical Analysis Of Yellow-passionfruitsupporting

confidence: 91%

Use of phosphites in postharvest to control anthracnose of yellow passionfruit

Dutra

Blum

2019

Biosci. J.

View full text Add to dashboard Cite

show abstract

“…Apesar de a aplicação de 1 e 2% desta solução, em frutos de maracujá submersos por 20 minutos, reduzir a perda de massa de matéria fresca (Tavares et al, 2003), os resultados podem não ser favoráveis à conservação de maracujá (Silva & Vieites, 2000).…”

Section: Resultsunclassified

“…Segundo Silva et al (2000), o tratamento com cálcio tem por objetivo retardar e/ou minimizar mudanças que ocorrem durante o armazenamento, como a diminuição da atividade respiratória e a redução da perda de massa da matéria fresca, visto que estes estão em função da transpiração e do consumo de substratos respiratórios.…”

Section: Resultsunclassified

Revestimentos alternativos na conservação pós-colheita de maracujá-amarelo

Silva¹,

Souza²,

Neto³

et al. 2009

Rev. Bras. Frutic.

View full text Add to dashboard Cite

Este trabalho objetivou avaliar diferentes substancias: cera de carnaúba, látex de seringueira, cloreto de cálcio e fécula de mandioca na conservação pós-colheita do maracujá-amarelo armazenado sob temperatura ambiente. Frutos colhidos, selecionados, lavados e sanitizados com água clorada a 150 mg L-1 foram submetidos aos seguintes tratamentos: 1 - controle, lavados e sanitizados; 2 - cera de carnaúba; 3 - látex de seringueira diluído 1:3 (v/v); 4 - cloreto de cálcio a 1%; 5 - fécula de mandioca a 2%. O delineamento utilizado foi o inteiramente casualizado em parcelas subdivididas, sendo a parcela principal formada pelo tempo de armazenamento, e as subparcelas pelos tratamentos, com 3 repetições de 4 frutos cada. O revestimento do maracujá-amarelo com cera de carnaúba, látex de seringueira, cloreto de cálcio e fécula de mandioca não influenciou nos resultados de massa fresca do fruto e da polpa, AT, SS, SS/AT e ácido ascórbico. O látex de seringueira, semelhantemente ao produto comercializado cera de carnaúba foram as coberturas mais eficientes, reduzindo a perda de massa e o índice de murchamento, e aumentando em 4 e 3 dias, respectivamente, a vida de prateleira dos frutos.

show abstract