Abstract:
Bangladesh ranked 7thcountry in the world and 3rdcountry in Asia among all the potato
producing countries. This is the third major vegetable consumed by Bangladeshis, which
indicate its importance as source of nutrient and potentiality to be source of preventive
therapeutic crop. Introduction of new antioxidants, polyphenols, and carotenoids rich
varieties could offer the prospect to use this widely used vegetable as a source of
therapeutic biomaterials for anticancer or heart disease. In Indian subcontinent, people
suffer from mal-nutrition especially in rural area. Sweet potatoes are not as expensive so
poor people of rural areas can afford this easily. So, it is important to know the nutritional
content of potatoes and sweet potatoes.Sweet potatoes come in many different colors. The
skin can be white, yellow, red, purple or brown, and the flesh can be white, yellow, orange
or purple. However, in the United States, there are two main varieties of sweet potato: one
has a golden skin with creamy white flesh and a crumbly texture.In Bangladesh sweet
potatoes grows well because of its climate. It is easy to cultivate and less expensive. So if
we grow it more and supply to the poor people then malnutrition problem could be
solved.Sweet potatoes are available a range of colors, including those with white, yellow,
orange or purple flesh. The purplevarieties contain the foremost antioxidants, and also the
white-fleshed varieties contain the smallest amount of those helpful nutrients, in keeping
with a study revealed in "Food Chemistry" in 2007. Different flesh of colored potato like
yellow, purple, orange are also out there. However, the foremost common kind of sweet
potato is that the one with copper-colored skin and soft orange flesh. To address these
scientific challenges 14 new varieties of potatoes, including colored species, have been
collected and their drying kinetics, total suspended solid content, effect of pH on their
extracts have been observed. Irrespective of colors these varieties have higher amount of
total suspended solids (TSS), lower drying rates and solid content compared to available
varieties in Bangladesh. Concomitantly, the TSS and drying kinetics suggested that, these
varieties have the prospect to be the major source of Antioxidants and water insoluble
nutrients to confirm their supremacy as food compared to existing species. Physicochemical properties are important to know because Bangladesh is a developing country.
