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Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 488437
Title Glucosinolates during preparation of Brassica vegetables in Indonesia
Author(s) Nugrahedi, P.Y.
Source Wageningen University. Promotor(en): Tiny van Boekel, co-promotor(en): B. Widianarko; Matthijs Dekker; Ruud Verkerk. - Wageningen : Wageningen University - ISBN 9789462573048 - 155
Department(s) Food Quality and Design
Onderwijsinstituut
VLAG
Publication type Dissertation, internally prepared
Publication year 2015
Keyword(s) glucosinolaten - bladgroenten - thermische afbraak - chemische samenstelling - voedselbereiding - kookmethoden - fermentatie - indonesië - glucosinolates - leafy vegetables - thermal degradation - chemical composition - food preparation - cooking methods - fermentation - indonesia
Categories Chemistry of Food Components
Abstract

Title:

Glucosinolates during preparation of Brassica vegetables in Indonesia

Dutch translation of title:

Effecten van Indonesische bereidingsmethoden op gezondheidsbevorderende stoffen in groenten

Title/description for non-professionals:

Effects of Indonesian preparation methods on health promoting compounds in vegetables

Summary:

Stir-frying, one of the most popular method to prepare Brassica vegetables in Indonesia, can retain the content of the alleged health promoting glucosinolates. Meanwhile, long-term steaming and fermentation considerably reduce the glucosinolate content. By analysing the mechanisms underlying glucosinolate changes during preparation, alternative procedures or conditions to enhance the retention of glucosinolates were proposed. For fermentation, prior inactivation of myrosinase enzyme resulted in a higher retention of glucosinolate. For steaming, a reduction of the steaming time was shown beneficial to have a higher glucosinolate content. A mathematical modelling approach was successfully applied to describe the effects of variation in the conditions and processes on the glucosinolate content of products and to optimise them in order to get a more optimal glucosinolate content in the prepared products. Besides improvement of the content of vegetable products, the present study also yields important information to make a more accurate estimation of the dietary intake of glucosinolates in prepared dishes. Such estimation is important for establishing the relation between intake of phytochemicals and health effects like reducing the risk of certain diseases.

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