Time dependence of bioactive compounds and antioxidant capacity during germination of different cultivars of broccoli and radish seeds

Optimisation of the germination process of different cultivars of broccoli ( Brassica oleracea var. italica cv. Lucky, cv. Tiburon and cv. Belstar) and radish ( Raphanus sativus cv. Rebel and cv. Bolide) seeds in relation to the content of glucosinolates (GLS), vitamin C and total antioxidant capaci...

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Bibliographic Details
Published in:Food chemistry 2010-06, Vol.120 (3), p.710-716
Main Authors: Martinez-Villaluenga, Cristina, Peñas, Elena, Ciska, Ewa, Piskula, Mariusz K., Kozlowska, Halina, Vidal-Valverde, Concepción, Frias, Juana
Format: Article
Language:English
Subjects:
antioxidant activity
Antioxidant capacity
bioactive properties
Biological and medical sciences
Brassica oleracea
Broccoli
cultivars
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
Germination time
Glucosinolates
Radish
radishes
Raphanus sativus
seed germination
seeds
sprouts (food)
Vitamin C
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Summary:Optimisation of the germination process of different cultivars of broccoli ( Brassica oleracea var. italica cv. Lucky, cv. Tiburon and cv. Belstar) and radish ( Raphanus sativus cv. Rebel and cv. Bolide) seeds in relation to the content of glucosinolates (GLS), vitamin C and total antioxidant capacity was carried out in order to maximise the health-promoting properties of Brassica sprouts. The content of total and individual GLS varied between species, among cultivars, and germination time. Glucoraphanin in broccoli and glucoraphenin in radish were the predominant GLS in raw seeds (61–77 and 63–129 μmol/g DM, respectively) and, although their content decreased during germination, they were maintained in rather large proportions in sprouts. Vitamin C was not detected in raw seeds and its content increased sharply in broccoli and radish sprouts (162–350 and 84–113 mg/100 g DM, respectively). Raw brassica seeds are an excellent source of antioxidant capacity (64–90 and 103–162 μmol Trolox/g DM in broccoli and radish, respectively) and germination led to a sharp increase. Germination of broccoli cv. Belstar and radish cv. Rebel for 4 days provided the largest glucoraphanin and glucoraphenin content, respectively, and also brought about large amounts of vitamin C and antioxidant capacity.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2009.10.067