The bioaccessibility of iodine in the biofortified vegetables throughout cooking and simulated digestion

Biofortification of crops with exogenous iodine is a novel strategy to control iodine deficiency disorders (IDD). The bioaccessibility of iodine (BI) in the biofortified vegetables in the course of soaking, cooking and digestion, were examined. Under hydroponics, the concentration of iodine in leafs...

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Bibliographic Details
Published in:Journal of food science and technology 2018-01, Vol.55 (1), p.366-375
Main Authors: Li, Rui, Li, De-Wang, Yan, Ai-Lan, Hong, Chun-Lai, Liu, Hui-Ping, Pan, Le-Hua, Song, Ming-Yi, Dai, Zhi-Xi, Ye, Ming-Li, Weng, Huan-Xin
Format: Article
Language:English
Subjects:
60 APPLIED LIFE SCIENCES
Bioavailability
Celery
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cooking
Digestion
Food fortification
Food Science
High temperature
Hydroponics
Intestine
Iodine
Nutrient deficiency
Nutrition
Original
Original Article
pH effects
Studies
Vegetables
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Summary:Biofortification of crops with exogenous iodine is a novel strategy to control iodine deficiency disorders (IDD). The bioaccessibility of iodine (BI) in the biofortified vegetables in the course of soaking, cooking and digestion, were examined. Under hydroponics, the concentration of iodine in leafstalks of the celery and pakchoi increased with increasing exogenous iodine concentration, 54.8–63.9% of the iodine absorbed by pakchoi was stored in the soluble cellular substance. Being soaked in water within 8 h, the iodine loss rate of the biofortified celery was 3.5–10.4% only. More than 80% of the iodine in the biofortified celery was retained after cooking under high temperature. The highest BI of the biofortified vegetables after digestion in simulated gastric and intestinal juice amounted to 74.08 and 68.28%, respectively. Factors influencing BI included pH, digestion duration, and liquid-to-solid ratio. The high BI of the biofortified vegetables provided a sound reference for the promotion of iodine biofortification as a tool to eliminate the IDD.
ISSN:0022-1155
0975-8402
DOI:10.1007/s13197-017-2946-4