Abstract
Bitter Leaf is a vegetable that is widely consumed and cherished in South-Eastern Nigeria. Palm oil, Potash, Salt and boiling process was used in the squeeze-washing at 3 pre-processing methods of squeeze-wash and periods of 3 to 8 minutes. The percentage retention and losses of mineral and antinutrient increased simultaneously during squeeze-washing. Copper, magnesium, calcium and antinutrient had retention of 55 to 100% for samples squeezed-washed with palm oil than the other squeeze- washed samples. This could be due to rigidity of the cells which did not allow much nutrient leached into the squeezed leaf/water; whereas, the loss of mineral and antinutrients was practically of the same magnitude (27.3 to 80.5%) in all the samples. Loss of minerals and antinutrients was observed to be influenced directly by the cause-and-effect of disintegration changes which usually leads to softening due to the severity of the squeeze-washing on the bitter leaf instead of cellular composition or level of minerals and antinurients initially present. The results are discussed in relation to traditional commercial practice of bitter leaf processing.
Highlights
Green leafy vegetable are important as food both from economic and nutritional standpoint [9]
Some the forms of these phytochemicals have been used in folk medicine to improve some human health conditions. [18] stated that the potassium content of leafy vegetables is good in the control of diuretic and hypertensive complications, because it lowers arterial blood pressure
[35] reported significant reductions (p
Summary
Green leafy vegetable are important as food both from economic and nutritional standpoint [9]. Leafy vegetables contain nutrients which can be absorbed by the body to be used as regulatory and protective material [39]. They occupy an important place among the food crops as they provide adequate amount of many vitamins and minerals for humans [15]. Leafy vegetables represent inexpensive but high quality nutritional sources for the poor segment of the population, especially where malnutrition is widespread [29]. They contain phytochemicals which have both positive and detrimental effects. Some the forms of these phytochemicals have been used in folk medicine to improve some human health conditions. [18] stated that the potassium content of leafy vegetables is good in the control of diuretic and hypertensive complications, because it lowers arterial blood pressure
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