Sweet potato beverage

Tomoyuki, O. et al., Determination of acylated anthocyanin in human urine after ingesting a purple-fleshed sweet potato beverage with various contents of anthocyanin by LC-ESI-MS/MS, Biosci. Biotechnol Biochem., 70, 2540, 2006. 

Pharmacokinetics. Recently, it has been shown that human urine of 87 volunteers after ingestion of a purple-fleshed sweet potato beverage contained peonidin 3-caffeoylsophoroside-5-glucoside. Absorption of this compound into the bloodstream of rats and presence as an intact acylated form in their plasma has been demonstrated previously (Oki et al. 2006 and references therein). Urinary excretion of anthocyanins is usually low due to metabolization. 

The results obtained in this study show that sweets and beverages poorly contribute to trace element intake, while cereals (bread, pasta, pizza, rice) and tubers (potatoes), followed by vegetables and fruit, contribute primarily to total daily intakes. The mean intake through cereals and tubers is between 30 and 55 percent... 

Van Den (1992) reported two beverages from orange-fleshed sweet potato. One of the beverages, which were highly acceptable to consumers, was fruity and resembled fruit juice drinks. Sweet potato roots were processed into precooked powder, which was sieved and mixed with cocoa powder. The sweet potato-cocoa (85 15) hot drink was also acceptable to consumers. 

Of general interest may be advanced studies on the photostability of food and beverages in particular the degradation of anthocyanins from grape and purple sweet potato and the alteration of enzymes after analysis. " ... 

In recent years, the conversion of starch to fructose has become a very important commercial process. High-fructose corn syrup (HFCS) is approximately twice as sweet as sucrose. It is used in soft drinks, canned fruits, lactic acid beverages, juice, bread, ice cream, frozen candies, and so on. HFCS can be obtained from a variety of cereals and vegetables, such as corn, wheat, rice, potatoes, and cassava. Corn is the most important source of HFCS because of low costs and excellent utilities of its by-products, corn meal, oil, gluten, germ, and fiber. 

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