Armazenamento de mamão 'formosa' revestido à base de fécula de mandioca

Abstract

R E S U M ODe entre as tecnologias para reduzir as perdas da pós-colheita, o biofilme tem função de revestir o fruto impedindo as trocas gasosas entre o fruto e o ambiente. A fécula de mandioca é um biofilme de polissacárido tendo como principais vantagens o aumento da eficiência, resistência e baixo custo. O objetivo deste trabalho foi avaliar os efeitos da fécula de mandioca, como biofilme, aplicada em mamão (Carica papaya L.) da variedade 'Formosa' Thainung1, no 2º estado de maturação, tendo sido comparadas duas concentrações de 2% e 4%, durante o período de 12 dias, e armazenadas à temperatura de 10±2ºC. O estudo estatístico foi Delineamento Inteiramente Casualizado-DIC (3 x 5). O biofilme manteve o teor de sólidos solúveis totais, acidez titulável, promoveu o aumento do índice de maturação e de vitamina C, além de reduzir a perda de massa, diâmetro, espessura, firmeza da fruta e polpa. Conclui-se que o biofilme de fécula de mandioca a 2% aumentou o tempo de vida útil do fruto e proporcionou maior controlo da qualidade.Palavras Chave: biofilme, fécula de mandioca, papaia, agricultura tropical. A B S T R A C TAmong the technologies to reduce losses in post-harvest, the biofilm has function to coat the fruit prevented the gas exchange between the fruit and the environment. The cassava starch is a polysaccharide biofilm with the main benefits: increased efficiency and resistance and low cost. This study aimed to evaluate the effects of cassava starch, as biofilm, applied in papaya (Carica papaya L.) variety 'Formosa' Thainung1 obtained in the 2nd ripeness, comparing two concentrations, 2% and 4%, during 12 days, and stored at 10 ± 2 ° C. The statistical study was Entirely Randomized Design -DIC (3 x 5). Biofilm preserved the total soluble solids content, titratable acidity, promoted maturity index vitamin C, reduced mass loss, diameter, thickness and firmness of the fruit and the pulp. It is concluded that 2% of cassava starch biofilms increased the fruit shelf-life, and provided the highest quality.

Agar and pomegranate seed oil used in a biodegradable coating composition for Formosa papaya

“…Souza et al (2014a) obtained an average of 0.09% of citric acid for papayas of the same variety, as well as found by Freitas et al (2018). Silva (2019) obtained mean values equal to 82 mg/100 g of vitamin C for fruits at the beginning of storage time, being found in this study an average of 38.01 mg/100 g. Nunes et al (2017) found mean values above 60 mg/100 g of vitamin C in Formosa papayas coated with cassava starch. The average pH was 5.21, which was the same as that found by Viana et al (2015).…”

“…There was little variation of pH between treatments, with T4 having the highest pH value, that is, fruits submitted to this treatment are less acid than those submitted to the other treatments. The mean pH was 5.34, a value close to that found by Nunes et al (2017), which obtained a mean pH of 5.3 for papaya fruits of the same cultivar (Formosa -'Tainung 01'). Already Teodosio et al (2018), when covering "Golden" papayas with microalgae and pomegranate seed oil, found average pH values between 4.8 and 5.2.…”

“…The average pH was 5.21, which was the same as that found by Viana et al (2015). However, Nunes et al (2017) found mean values between 5.34 and 5.44 for papayas of the same variety coated with cassava starch.…”

“…The coatings that provided a lower vitamin C content were T1 and T6, due to the absence of coating (T6) or the lower concentration of agar and pomegranate seed oil (T1). On their study with cassava starch-based coating, Nunes et al (2017) found, at 10 days, vitamin C values between 70 and 80 mg/100 g in papaya of the Formosa variety.…”

Uso de coberturas comestíveis a base de fécula de mandioca associado à refrigeração na qualidade pós-colheita de goiaba paluma

“…Existem diversas formulações de cobertura comestível dentre elas a base de fécula de mandioca, quitosana e amido, de acordo com Nunes et al (2017) a fécula de mandioca além de ser uma matéria prima de baixo custo, apresenta um ótimo custo-benefício, necessitando de estudos para determinação da melhor concentração para cada frutífera.…”