UPM Institutional Repository

Protein quality of roselle (Hibiscus sabdariffa L.) seeds


Mohd Nazri, Halimatul Saadiah and Ismail, Amin and Mohd Esa, Norhaizan and Abdul Ghani, Nawalyah and Mansor, Siti Muskinah (2007) Protein quality of roselle (Hibiscus sabdariffa L.) seeds. ASEAN Food Journal, 14 (2). pp. 131-140. ISSN 0127-7324; ESSN: 1505-5337


This study investigated the protein quality of two sets of Roselle seeds processed differently (dried and boiled). Twenty weanling Sprague Dawley rats were used to conduct the growth and nitrogen balance studies. Rats were fed with 10% (w/w) protein from dried (DS) and boiled (BS) Roselle seeds powder for 4 weeks. Casein was used in this study as a standard reference protein. There was a significantly higher (p < 0.05) food intake and weight gain by rats fed with BS compared with DS. In the growth study, there was no significant difference (p < 0.05) in protein efficiency ratio (PER) and net protein ratio (NPR) of BS compared to DS, but it was significantly different with casein (CD). PER value of rats fed with DS was significantly lower (p < 0.05) than casein. In the nitrogen balance study, true nitrogen absorption (TNA) and nitrogen balance (NB) of BS group was significantly higher (p < 0.05) than DS group. However, apparent digestibility (AD), true digestibility (TD) and biological value (BV) for both diets was not significantly different. This study showed that the protein quality of dried Roselle seeds was similar to the Roselle seeds boiled at 100oC for 30 minutes.

Download File

Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
Publisher: Universiti Putra Malaysia Press
Notes: Continued by: International Food Research Journal
Keywords: Growth study; Nitrogen balance study; Roselle seeds powder
Depositing User: Umikalthom Abdullah
Date Deposited: 24 Jun 2015 00:39
Last Modified: 15 Nov 2016 05:32
URI: http://psasir.upm.edu.my/id/eprint/18188
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item