Foods with thiamine
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Foods with Thiamine: Sources and Stability
Thiamine-Rich Vegetables: Pumpkin, Cauliflower, and Broccoli
Pumpkin, cauliflower, and broccoli have been identified as potential carriers of thiamine compounds for food fortification. Studies have shown that these vegetables can be impregnated with thiamine hydrochloride and thiamine pyrophosphate, maintaining their sensory quality even after being incorporated into products like gnocchi dumplings. However, it is important to note that thiamine losses can occur during storage and culinary preparation of these dried vegetables .
Thiamine-Fortified Fish Sauce
In regions where thiamine deficiency is prevalent, such as Cambodia, thiamine-fortified fish sauce has been shown to significantly increase thiamine levels in both lactating women and their infants. This fortification has the potential to prevent infantile beriberi, a serious condition caused by thiamine deficiency. The study demonstrated that both low and high concentrations of thiamine in fish sauce effectively raised erythrocyte thiamine diphosphate concentrations and breast milk thiamine levels .
Impact of Antithiamin Factors: Betel Nut and Fermented Fish
Certain foods, such as betel nuts and raw fermented fish, contain antithiamin factors that can inhibit thiamine absorption. In northeastern Thailand, the consumption of these foods has been correlated with thiamine deficiency. Cooking fermented fish can destroy thiaminase, an enzyme that breaks down thiamine, thereby reducing its antithiamin effect. Thiamine supplementation can counteract the effects of these antithiamin factors, although it may not be sufficient to neutralize the impact of betel nut chewing .
Thiamine in Cereal-Based Foods: Asian Noodles
Asian noodles, which are a significant part of the global diet, can be a good source of thiamine. However, the stability of thiamine during the processing of these noodles varies. White salted noodles tend to have higher thiamine levels compared to yellow alkaline noodles, which show greater thiamine losses due to higher pH levels. Cooking further reduces thiamine content, highlighting the need for careful consideration of processing methods to preserve thiamine .
Thiamine Stability in Spaceflight Foods
For long-term storage, such as in NASA spaceflight foods, thiamine stability varies among different food items. Brown rice and split pea soup have shown better resistance to thiamine degradation compared to beef brisket. This variability underscores the importance of selecting appropriate food matrices to ensure thiamine retention over extended periods .
Thiamine as a Bio-Preservative
Thiamine also exhibits bio-preservative and antimicrobial properties. In minced beef, thiamine has been shown to inhibit the growth of microbial contaminants and improve the physicochemical and microbiological parameters of stored meat. Additionally, thiamine has anti-inflammatory effects, reducing the expression of pro-inflammatory factors in LPS-stimulated macrophages .
Thiamine in Canned Cat Food
In canned cat food, the stability of thiamine can be influenced by the inclusion of yeast ingredients. While yeast can provide a form of thiamine that withstands retort processing, the interaction between yeast and vitamin premix can affect thiamine retention. Some yeast sources, such as LBV, may result in greater thiamine losses compared to others like BY .
Conclusion
Thiamine is an essential nutrient found in various foods, including vegetables, fortified sauces, and cereal-based products. Its stability can be affected by food processing methods, storage conditions, and the presence of antithiamin factors. Understanding these factors is crucial for optimizing thiamine intake and preventing deficiencies, particularly in vulnerable populations.
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