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Optimization of processing parameters and accelerated shelf life of kerisik

The study was conducted since there is no information about optimization of kerisik (roasted coconut paste) processing parameters and accelerated shelf life study of the optimized processing parameters of kerisik to date. Therefore, the objectives of the study were to use response surface methodo...

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Main Author: Mohamad, Naemaa
Format: Thesis
Language:English
Published: 2014
Subjects:
Roasting (Cooking)
Food - Shelf-life dating
Online Access:http://psasir.upm.edu.my/id/eprint/75986/1/FSTM%202014%2035%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/75986/
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spelling my.upm.eprints.759862019-11-20T06:43:31Z http://psasir.upm.edu.my/id/eprint/75986/ Optimization of processing parameters and accelerated shelf life of kerisik Mohamad, Naemaa The study was conducted since there is no information about optimization of kerisik (roasted coconut paste) processing parameters and accelerated shelf life study of the optimized processing parameters of kerisik to date. Therefore, the objectives of the study were to use response surface methodology (RSM) to optimize roasting temperature and roasting time to produce kerisik and consequently to use accelerated shelf life study to determine the shelf life of the kerisik. The optimization of kerisik processing parameters such as roasting temperature (130-150 °C) and roasting time (210-240 minutes) was achieved by using central composite design (CCD) via Design Expert software. Responses measured were color (L and b values) and furan compound (measured at 280 and 290 nm). Subsequently, the kerisik were packed in nylon and polypropylene packaging films and then were stored at two storage temperatures namely 38 °C for 38 days and 48 °C for 30 days for each type of packaging film. The analyses for accelerated shelf life study included moisture content (%), total color different (TCDH), peroxide value (PV) (meq kg-1), acid value and p-anisidine value. Accelerated shelf life study employed PV as it main parameter in shelf life estimation with PV of 10 meq per kg fat was considered as the threshold limit for oxidative rancidity. Result showed that the optimum processing conditions for kerisik (laboratory scale) by using oven were found to be 130 °C (roasting temperature) for 227 minutes (roasting time). Predicted value of responses (color and furan) obtained using model equations were in good agreement with the experimental values. L (lightness), b (yellowness) and furan measured at 280 and 290 nm were significantly affected by the processing parameters. Finally, the shelf life of kerisik in nylon packaging film was predicted to be 46-49 days and 41-43 days for kerisik in polypropylene film. Kerisik producers may consider the generated optimized processing parameters and accelerated shelf life information from this study for kerisik product development in order to find the best method to replace the conventional way of kerisik production. 2014-12 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/75986/1/FSTM%202014%2035%20-%20IR.pdf Mohamad, Naemaa (2014) Optimization of processing parameters and accelerated shelf life of kerisik. Masters thesis, Universiti Putra Malaysia. Roasting (Cooking) Food - Shelf-life dating
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
topic Roasting (Cooking)
Food - Shelf-life dating
spellingShingle Roasting (Cooking)
Food - Shelf-life dating
Mohamad, Naemaa
Optimization of processing parameters and accelerated shelf life of kerisik
description The study was conducted since there is no information about optimization of kerisik (roasted coconut paste) processing parameters and accelerated shelf life study of the optimized processing parameters of kerisik to date. Therefore, the objectives of the study were to use response surface methodology (RSM) to optimize roasting temperature and roasting time to produce kerisik and consequently to use accelerated shelf life study to determine the shelf life of the kerisik. The optimization of kerisik processing parameters such as roasting temperature (130-150 °C) and roasting time (210-240 minutes) was achieved by using central composite design (CCD) via Design Expert software. Responses measured were color (L and b values) and furan compound (measured at 280 and 290 nm). Subsequently, the kerisik were packed in nylon and polypropylene packaging films and then were stored at two storage temperatures namely 38 °C for 38 days and 48 °C for 30 days for each type of packaging film. The analyses for accelerated shelf life study included moisture content (%), total color different (TCDH), peroxide value (PV) (meq kg-1), acid value and p-anisidine value. Accelerated shelf life study employed PV as it main parameter in shelf life estimation with PV of 10 meq per kg fat was considered as the threshold limit for oxidative rancidity. Result showed that the optimum processing conditions for kerisik (laboratory scale) by using oven were found to be 130 °C (roasting temperature) for 227 minutes (roasting time). Predicted value of responses (color and furan) obtained using model equations were in good agreement with the experimental values. L (lightness), b (yellowness) and furan measured at 280 and 290 nm were significantly affected by the processing parameters. Finally, the shelf life of kerisik in nylon packaging film was predicted to be 46-49 days and 41-43 days for kerisik in polypropylene film. Kerisik producers may consider the generated optimized processing parameters and accelerated shelf life information from this study for kerisik product development in order to find the best method to replace the conventional way of kerisik production.
format Thesis
author Mohamad, Naemaa
author_facet Mohamad, Naemaa
author_sort Mohamad, Naemaa
title Optimization of processing parameters and accelerated shelf life of kerisik
title_short Optimization of processing parameters and accelerated shelf life of kerisik
title_full Optimization of processing parameters and accelerated shelf life of kerisik
title_fullStr Optimization of processing parameters and accelerated shelf life of kerisik
title_full_unstemmed Optimization of processing parameters and accelerated shelf life of kerisik
title_sort optimization of processing parameters and accelerated shelf life of kerisik
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/75986/1/FSTM%202014%2035%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/75986/
_version_ 1651869256789262336
score 13.211869

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