1. Use of plastic packaging and coverage of chitosan in the postharvest conservation of litchi
- Author
-
José Fernando Durigan, Ellen Toews Doll Hojo, Ronaldo Hissayuki Hojo, Universidade Estadual do Sudoeste da Bahia (UESB), and Universidade Estadual Paulista (Unesp)
- Subjects
Materials science ,plastic packages ,Plant Science ,Litchi chinensis ,lcsh:Plant culture ,Polyolefin ,Chitosan ,embalagens plásticas ,Polyvinyl chloride ,chemistry.chemical_compound ,chemistry ,Modified atmosphere ,escurecimento do pericarpo ,Browning ,Polyethylene terephthalate ,Postharvest ,lcsh:SB1-1110 ,Polystyrene ,pericarp browning ,chitosan ,quitosana ,Agronomy and Crop Science ,Food Science ,Nuclear chemistry - Abstract
Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:48:13Z No. of bitstreams: 1 S0100-29452011000500048.pdf: 1938988 bytes, checksum: 19ec791959fcee98c8b7392e2628820e (MD5) Made available in DSpace on 2013-08-22T18:48:13Z (GMT). No. of bitstreams: 1 S0100-29452011000500048.pdf: 1938988 bytes, checksum: 19ec791959fcee98c8b7392e2628820e (MD5) Previous issue date: 2011-10-01 Made available in DSpace on 2013-09-30T18:00:54Z (GMT). No. of bitstreams: 2 S0100-29452011000500048.pdf: 1938988 bytes, checksum: 19ec791959fcee98c8b7392e2628820e (MD5) S0100-29452011000500048.pdf.txt: 24362 bytes, checksum: 00045032930c567fefb9fa6e77235a55 (MD5) Previous issue date: 2011-10-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:17:52Z No. of bitstreams: 2 S0100-29452011000500048.pdf: 1938988 bytes, checksum: 19ec791959fcee98c8b7392e2628820e (MD5) S0100-29452011000500048.pdf.txt: 24362 bytes, checksum: 00045032930c567fefb9fa6e77235a55 (MD5) Made available in DSpace on 2014-05-20T13:17:52Z (GMT). No. of bitstreams: 2 S0100-29452011000500048.pdf: 1938988 bytes, checksum: 19ec791959fcee98c8b7392e2628820e (MD5) S0100-29452011000500048.pdf.txt: 24362 bytes, checksum: 00045032930c567fefb9fa6e77235a55 (MD5) Previous issue date: 2011-10-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Objetivou-se avaliar a efetividade da atmosfera modificada, através de embalagens plásticas e coberturas de quitosana, na conservação pós-colheita de lichias. O delineamento estatístico foi o inteiramente casualizado, disposto em esquema fatorial 5 x 7, com 3 repetições, onde o primeiro fator corresponde aos tratamentos: Testemunha; Bandejas rígidas de poliestireno revestidas com filme poliolefínico de 0,015mm (PD955); Bandejas rígidas de polietileno tereftalato (PET); Bandejas de poliestireno recobertas com filme de cloreto de polivinila (PVC) de 0,014mm; e Imersão em quitosana a 0,5%. O segundo fator foi o tempo de armazenamento, 0 (inicial); 4; 8; 12; 16; 20 e 24 dias, a 5 ºC (94 %UR). Cada parcela foi composta por 8 frutos, sendo que os tratados com quitosana foram contidos em bandejas rígidas de poliestireno, sem filme. Os resultados obtidos permitiram concluir que a proteção com filmes plásticos reduziu significativamente a perda de massa por lichias mantidas sob refrigeração, com redução na intensidade do escurecimento dos frutos. O tratamento com quitosana a 0,5%, em ácido tartárico a 10%, pH 0,8, mostrou-se efetivo na manutenção da coloração vermelha e na prevenção ao escurecimento, conservando a aparência dos frutos. The objective of the study was to evaluate the effectiveness of a modified atmosphere, by the use of plastic covers packaging and chitosan coverage in lychee postharvest storage. The experimental design was completely randomized in a factorial 5 x 7, with 3 replications, where the first factor corresponds to the treatments: control; rigid polystyrene trays (22.4cm x 14.8cm) coated with a 0.015mm (PD955) polyolefin film (PF); 500ml transparent rigid polyethylene terephthalate (PET) trays with lid; polystyrene trays covered with 0.014mm polyvinyl chloride (PVC) film; and immersion in 0.5% chitosan. The second factor was the storage time, 0 (initial), 4, 8, 12, 16, 20 and 24 days at 5 ° C, 94% RH. Each plot consisted of eight fruits, and those treated with chitosan were placed in rigid polystyrene trays without film. The results showed that the modified atmosphere reduced significantly the mass loss of fruits stored under refrigeration, especially with PVC film. Chitosan 0.5% proved to be more effective in maintaining the red color and preventing browning, keeping the fruits more attractive. UESB UNESP FCAV Departamento de Tecnologia UNESP FCAV Departamento de Tecnologia
- Published
- 2011
- Full Text
- View/download PDF