Browsing by Author "Umuhozariho, M. G"

Now showing 1 - 2 of 2

Sensory evaluation of different preparations of cassava leaves from three species as a leafy vegetable
(African Journal of Biotechnology, 2013-11-13) Umuhozariho, M. G; Shayo, N. B; Sallah, P. Y. K; Msuya, J. M
Cassava leaves are largely consumed in Africa and are among the top three African indigenous vegetables rich in nutrients. Leaves from bitter (Manihot utilissima), sweet (Manihot dulcis) and wild (Manihot glaziovii) species of cassava were cooked by boiling in salted (sodium bicarbonate and table salt) water with the addition of palm oil and ground-nut paste, following processing by “pounding”, “pounding and then drying” and, “drying and then pounding”. The drying was done in tunnel solar drier at temperature of 65°C on average. Nine samples (three species x three processing methods) were evaluated by 31 panelists, using a five point hedonic scale, where 5 = like very much and 1= dislike very much. Cassava species affected significantly (p = 0.0047; 0.0206) scoring for texture and overall acceptability, respectively, but not for colour, aroma and taste. Processing method highly significantly (p< 0.0001) affected all the sensory attributes scoring. Leaves from all three species were liked as leafy vegetable, except when pounded after drying.
Utilization of cassava leaves as a vegetable in Rwanda
(Rwanda Journal, 2011) Umuhozariho, M. G; Shayo, N.B; Msuya, J. M; Sallah, P. Y. K
Cassava (Manihot esculenta Crantz) leaves is an important vegetable in Rwanda. The objectives of this study were to determine cassava species from which leaves are harvested as vegetable and identify leaf preparation methods, consumption rate, price variation, storability and perception of post-harvest losses. A pre-tested structured questionnaire with closed and open-ended questions was administered to stratified groups of cassava leaves producers and consumers in four purposively selected sectors of Ruhango District and retailers in the main markets of Ruhango and Kigali city. In total, 171 respondents were interviewed from 11 to 26 August 2011. Cassava leaves are highly consumed in Ruhango District as 96.0 % of families harvested leaves for food. On average, 17.5 % of farmers sell cassava leaves that are retailed in markets of towns and cities including Kigali City. Sweet (Manihot dulcis), bitter (Manihot utilissima) and wild (Manihot glaziovii) are the cassava species from which leaves are consumed as vegetable, but the leaves of wild cassava are preferred by 66.0 % of consumers. Prices of cassava leaves varied significantly (p=0.0182) according to season with higher prices in the dry than rainy season. Prices of leaves at farm gate and retail levels were highly different (p= 0.0016), averaging 32 and 65 Frw by bunch in the rainy season, respectively. Despite the high consumption and trade of cassava leaves, post-harvest losses were high, especially in the rainy season. Cassava leaves were mainly cooked fresh, but 15.4 % of households processed leaves by sun drying. The storage period was extended to two months by sun-drying. In each case and, prior to cooking, cassava leaves were pounded. Cassava leaves are considered as a favourite and nutritive vegetable and technologies to improve storability, value and trade are needed. Assessment of effects of processing on nutritional quality and safety is also important