The effect of pre-treatment, temperature and length of frozen storage on the retention of chlorophylls in frozen brassicas
Journal Title: Acta Scientiarum Polonorum Technologia Alimentaria - Year 2008, Vol 7, Issue 2
Abstract
The investigation covered broccoli, green cauliflower and Brussels sprouts. The evaluation concerned the raw material; the material after blanching; the material after cooking; and frozen products from blanched (traditional method) and cooked (modified method) material, stored at –20°C and –30°C then prepared for consumption using water-cooking in the traditional method and thawing by microwave in the modified method after 0, 4, 8 and 12 months of frozen storage. Depending on the investigated sample, the vegetables prepared for consumption after 12 months of frozen storage retained total chlorophylls as follows: broccoli, 45-66% of the content in the raw material; green cauliflower, 30-45%; and Brussels sprouts, 66-78%. In comparison with the traditional method, the mean content of chlorophylls in Brussels sprouts obtained using the modified method was 16% higher; however, in broccoli the content was lower by 23% and in cauliflower by 21% on average. Lower storage temperature resulted in higher content of chlorophylls in all investigated vegetables.
Authors and Affiliations
Waldemar Kmiecik, Zofia Lisiewska, Jacek Słupski, Piotr Gębczyński
Keywords
Related Articles
- EP ID EP50835
- DOI -
- Views 116
- Downloads 0
Zastosowanie probiotyków w produkcji surowo dojrzewających wyrobów mięsnych
Szczepy bakterii probiotycznych z powodzeniem są stosowane w produkcji przetworów mlecznych, niektórych soków, natomiast nie obserwuje się ich wykorzystania w produkcji surowo dojrzewających wyrobów mięsnych. Uważa się b...
Biotransformation of ferulic acid by Lactobacillus acidophilus KI and selected Bifidobacterium strains
Background. Lactic acid bacteria (LAB) were pointed out to produce ferulic acid esterase. Except the release of phenolic acids from esterified forms, it was postulated that the biotransformations of these compounds can o...
Role of p-aminobenzoic acid (PABA) in modeling selected properties of bakery yeast
[b]Background.[/b] PABA is a growth factor; however, some papers report on the inhibiting effect of its high doses on the growth of yeast. The aim of this work was to examine the influence of PABA on growth of yeast, bio...
Enological profile of Saccharomyces cerevisiae yeast isolated from fermenting plum mashes
Background. Śliwowica Łącka is a strong plum brandy (slivovitz) that is produced in a submontane region of Poland by means of spontaneous fermentation of Węgierka plums. The aim of this study was to evaluate enological p...
PCR methods in meat species identification as a tool for the verification of regional and traditional meat products
In the times of industrial food production, regional and traditional food articles provide an attractive alternative for people looking for unforgettable sensory impressions. Regional or traditional food, commonly recogn...