Articles
Observations of the effect of different bioplastic packaging on prolonging the storage life of rambutan and biodegradability of the packaging
Article number
1186_27
Pages
177 – 184
Language
English
Abstract
Effect of bio-packaging materials on postharvest life of rambutan fruit was investigated in this study.
Three different bio-packaging materials, polylactic acid (PLA), polybutylene succinate (PBS) and Mater-Bi®, were blown-molded into bags to contain 1 kg rambutan fruit, while low-density polyethylene (LDPE) bags were used as the control group.
There was no addition of additive compounds into PLA or PBS film during the forming process.
All films were measured for mechanical properties, water vapor and oxygen transmission rates, and biodegradability.
Afterwards, rambutan fruits were randomly divided into four groups, packed in the different bag types and stored at 13±2°C with 78% RH. Mater-Bi® and PBS bags were easier to produce and use than PLA bags.
The highest levels of both water vapor and oxygen transmission rates were detected in Mater-Bi® film followed by PBS and PLA bags, respectively.
Percentage of elongation of Mater-Bi® in machine direction and across direction were significantly higher than other films, while the tensile strength of Mater-Bi® had the lowest values in both directions followed by PBS and PLA, respectively.
Mater-Bi® and PLA films took over 100 days to start degrading in moist soil, whereas PBS film began to degrade at 16 days and its degradation increased to 31.25% in 161 days.
Rambutan kept in PBS bags had the lowest weight loss (%) with yellowish-red skin and fresh green spintern.
The greater weight loss and brown skin appearance was found in rambutan packed in Mater-Bi® bags followed by those in LDPE. Results indicated that packaging made from PBS film could extend postharvest life of rambutan for 15 days at 13°C storage, and these bags begin to biologically degrade more quickly.
The findings are observations only, since no statistical analyses are presented, although significant differences are referred to in the text.
Three different bio-packaging materials, polylactic acid (PLA), polybutylene succinate (PBS) and Mater-Bi®, were blown-molded into bags to contain 1 kg rambutan fruit, while low-density polyethylene (LDPE) bags were used as the control group.
There was no addition of additive compounds into PLA or PBS film during the forming process.
All films were measured for mechanical properties, water vapor and oxygen transmission rates, and biodegradability.
Afterwards, rambutan fruits were randomly divided into four groups, packed in the different bag types and stored at 13±2°C with 78% RH. Mater-Bi® and PBS bags were easier to produce and use than PLA bags.
The highest levels of both water vapor and oxygen transmission rates were detected in Mater-Bi® film followed by PBS and PLA bags, respectively.
Percentage of elongation of Mater-Bi® in machine direction and across direction were significantly higher than other films, while the tensile strength of Mater-Bi® had the lowest values in both directions followed by PBS and PLA, respectively.
Mater-Bi® and PLA films took over 100 days to start degrading in moist soil, whereas PBS film began to degrade at 16 days and its degradation increased to 31.25% in 161 days.
Rambutan kept in PBS bags had the lowest weight loss (%) with yellowish-red skin and fresh green spintern.
The greater weight loss and brown skin appearance was found in rambutan packed in Mater-Bi® bags followed by those in LDPE. Results indicated that packaging made from PBS film could extend postharvest life of rambutan for 15 days at 13°C storage, and these bags begin to biologically degrade more quickly.
The findings are observations only, since no statistical analyses are presented, although significant differences are referred to in the text.
Authors
S. Tengrang, N. Leabwan, K. Loylerd, P. Enmak, S. Changprasert, A. Korppiboon
Keywords
bio-packaging, polylactic acid, polybutylene succinate, oxygen transmission rate, storage life
Groups involved
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