Modelling the drying characteristics of the traditional Indonesian crackers "kerupuk"

Annisa Kusumaningrum, Dwi Joko Prasetyo, Ervika Rahayu Novita Herawati and Asep Nurhikmat
Additional contact information
Dwi Joko Prasetyo: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia
Ervika Rahayu Novita Herawati: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia
Asep Nurhikmat: Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta, Indonesia

Research in Agricultural Engineering, 2019, vol. 65, issue 4, 137-144

Abstract: An oven drying method was used to dry traditional Indonesian crackers, popularly known as kerupuk, applying drying temperatures of 50, 60 and 70°C and three different flavours, i.e., garlic, chili and seaweed. Newton, Page, Two terms, Midilli, Logarithmic and Henderson & Pabis mathematical models were used to fit the best model while the standard error of estimate (SSE), root mean square error (RMSE) and coefficient of correlation (r) were chosen as the criteria to determine the equation of the best fit drying model. The Midilli model was the best fit for all the kerupuk flavours. The effective moisture diffusivity was in the range of 1.0413 × 10-10-1.6363 × 10-10 m2.s-1 for the garlic flavour, 1.0007 × 10-10-1.5619 × 10-10 m2.s-1 for the chili flavour and from 1.0000 × 10-10 to 1.6228 × 10-10 m2.s-1 for the seaweed flavour. The activation energy of the garlic flavour, chili flavour and seaweed flavour kerupuk are 20.64, 20.64 and 22.57 kJ.mol-1, respectively. Furthermore, in the present study, the physical properties, i.e., the colour and hardness of the kerupuk crackers after the drying process was investigated.

Keywords: snack; temperature; Midilli; home industry; colour; hardness (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://rae.agriculturejournals.cz/doi/10.17221/27/2019-RAE.html (text/html)
http://rae.agriculturejournals.cz/doi/10.17221/27/2019-RAE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlrae:v:65:y:2019:i:4:id:27-2019-rae

DOI: 10.17221/27/2019-RAE

Access Statistics for this article

Research in Agricultural Engineering is currently edited by Bc. Michaela Polcarová

More articles in Research in Agricultural Engineering from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().