Physicochemical Characterization of Nine Cassava (<i>Manihot esculenta</i>Crantz) Cultivars from Chad

• 作者: Aliou Guissé Djirabaye Nadjiam Nicolas Cyrille Ayessou
• 来源期刊: 食品与营养科学(英文)
• 学科: 化学
• 关键词: Physicochemical Constituents Leaves TUBERS CULTIVAR CASSAVA CHAD
• 年，卷（期）: spyyykxyw_2020,（7）
• 页码范围: 741-756
• 页数: 16页
• 分类号: O62

摘要

In Chad, despite the multiple culinary uses of cassava leaves and tubers, their nutritional values are untapped. In this study, the physicochemical compositions and structure of nine cultivars were assessed. The proteins were obtained by Kjeldahl’s method. Total sugars were determined according to the Luff-Schoorl method. For starch content, the polarimetric method of Earle and Milner was used. Mineral elements were carried out using an atomic absorption spectrophotometry. The cyanide was evaluated by the method of Williams and Edwards. Significant variability has been demonstrated in the leaves and dry tubers except for water content and dry matter. Analysis of the variances of the components of the tubers reveals that the water contents of the cultivars vary from 5.01% to 5.86%. The ash contents vary from 4.23% (cultivar DVA2) to 8.32% (cultivar DVL2). For total sugars, the values are between 53.63% (cultivar DVL2) and 57.99% (cultivars DVL12 and KA0303). The fiber contents are lower and vary from 1.74% (cultivar DVL12) to 1.92% (cultivars SB1366, DVA2, TL0101 and PG1314). The starch content varies from 28.93% (cultivar DVL12) to 31.05% (cultivar SB1366). The variations in mineral constituents of the tubers in mg/100g are Ca (145.21 - 250.08), Mg (83.89 - 165.22), P (147.34 - 360.78), K (1534.50 - 3064.09), Zn (0.75 - 0.82) and Mn (0.78 - 0.89). Iron concentrations are from 7.72 mg/100g (cultivar BA0909) to 60.62 mg/100g (cultivar DVA2</span><span style="font-family:Verdana;">)</span><span style="font-family:""><span style="font-family:Verdana;">. Analysis of the variances of the </span><span style="font-family:Verdana;">leaf constituents reveals high contents of Calcium for SB1366 (2108.41 mg/100g)</span><span style="font-family:Verdana;">, of iron (Fe 54.26 mg/100g) and potassium (K 1866.86 mg/100g) for DVL12, </span><span style="font-family:Verdana;">of phosphorus for TL0101 (471.87 mg/100g), of phosphorus (470.36 mg/100g)</span> <span style="font-family:Verdana;">and protein (30.74%) for PG1314, for magne