Wahidu Zzaman

Biochemical and radical-scavenging properties of sea cucumber (Stichopus vastus) collagen hydrolysates

The molecular mass distribution, amino acid composition and radical-scavenging activity of collagen hydrolysates prepared from collagen isolated from the sea cucumber Stichopus vastus were investigated. β and α1 chains of the collagen were successfully hydrolysed by trypsin. The molecular mass distribution of the hydrolysates ranged from 5 to 25 kDa, and they were rich in glycine, alanine, glutamate, proline and hydroxyproline residues. The hydrolysates exhibited excellent radical-scavenging activity. These results indicate that collagen hydrolysates from S. vastus can be used as a functional ingredient in food and nutraceutical products.

Influences of superheated steam roasting on changes in sugar, amino acid and flavour active components of cocoa bean (Theobroma cacao ): Influences of superheated steam roasting of cocoa bean

BACKGROUND Roasting is one of the important unit operations in the cocoa-based industries in order to develop unique flavour in products. Cocoa beans were subjected to roasting at different temperatures and times using superheated steam. The influence of roasting temperature (150-250°C) and time (10-50 min) on sugars, free amino acids and volatile flavouring compounds were investigated. RESULTS The concentration of total reducing sugars was reduced by up to 64.61, 77.22 and 82.52% with increased roasting temperature at 150, 200 and 250°C for 50 min, respectively. The hydrophobic amino acids were reduced up to 29.21, 36.41 and 48.87% with increased roasting temperature at 150, 200 and 250°C for 50 min, respectively. A number of pyrazines, esters, aldehydes, alcohols, ketones, carboxyl acids and hydrocarbons were detected in all the samples at different concentration range. Formation of the most flavour active compounds, pyrazines, were the highest concentration (2.96 mg kg-1 ) at 200°C for 10 min. CONCLUSION The superheated steam roasting method achieves the optimum roasting condition within a short duration Therefore, the quality of cocoa beans can be improved using superheated steam during the roasting process.

General guideline for applying Islamic dietary requirement in HACCP programme

This paper highlights the potential benefits of applying Islamic dietary laws to food production standards using the hazard analysis and critical control points (HACCP) concept. Currently, Islamic dietary specifications and obligations are being coordinated with standard guidelines in some countries without enforcing the use of safety standards. The HACCP concept approach with the identification of halal critical control points are discussed, ideally allowing the harmonisation and integration of common principles towards safe halal wholesome food. Eventually this approach leads to the easy and effective application of religious prescriptions by the food chain from farm to table systematically without compromising the law.

Effects of Incorporation of Jackfruit Rind Powder on Chemical and Functional Properties of Bread

Nowadays, there is a rising interest towards consuming health beneficial food products. Bread–as one of the most popular food products–could be improved to ‘healthy bread’ by addition of ingredients high in protein, dietary fiber and low in calorie. Incorporating Jackfruit rind powder (JRP) as a by-product rich in dietary fiber in bread, could not only provide health beneficial bread products, but also lead to develop an environmental friendly technology by solving the problem of waste disposal of residues. In this study, addition of jackfruit rind powder (JRP) as a high dietary fiber and functional ingredient in bread was examined. The results showed that incorporation of JRP in bread improved functional properties of flour such as Oil Holding Capacity (OHC), Water Holding Capacity (WHC) and pasting properties. Addition of 5%, 10% and 15% of JRP in wheat flour caused significantly (p < 0.05) higher insoluble, soluble and total dietary fiber in flour and bread products. Results from proximate composition indicated that all breads substituted with JRP, contained significantly (p < 0.05) higher fiber, moisture and fat. Obtained results confirmed that the JRP has great potential in development of functional foods especially functional bread products.

Is there a market for Istihalah food product in Indonesia

Purpose – This study aims to investigate the awareness of Muslim students regarding Istihalah in their daily life. The study was carried out to investigate attitude and awareness towards Istihalah among Muslim students in Universiti Pertanian Bogor (UPB), Indonesia. Design/methodology/approach – In total, 456 students were randomly selected from the university. A self-administered questionnaire was handed out to consenting students focusing on attitude and awareness towards Istihalah and eagerness to learn more about Istihalah. Findings – Results showed that Muslim students lacked information about Istihalah. From the total number of students 86.18 per cent agreed that information and knowledge of Istihalah is scarce. 40.1 per cent believed that Ulamas (Muslim scholars) are a very important source of knowledge regarding Istihalah, and 87.50 per cent are willing to learn more about Istihalah. Research limitations/implications – The respondents in this study were Muslim students in UPB, Indonesia. The resul...