ABSTRACT

In this study, the work was carried out to determine the nutrient composition, glycemic index and glycemic load of aerial yam-cowpea fufu-like product in healthy subjects .Proximate and antinutrent analysis were carried out on the test food, two (2) products were used to formulate four (4) samples of 50:50, 60:40, 80:20 and 100, 50 g oforal glucose was used as reference food and also 50 g ofthe test food was used to check for the glycemic using standard method. A total of eight (8) healthy volunteers were used in this study. The volunteers consisted of six (6) females and two (2) males, two (2) persons per group. The Body mass index (BMI) ofthe subjects were assessed using a structured questionnaire and a weighing scale respectively. Capillary blood samples were collected using Glucometer (Accu check). The result ofthe proximate analysis showed that the moisture content ranged from 18.77 - 22.86 %, sample AC1 containing (50 % aerial yam - 50 % cowpea) had the highest moisture content of 22.86 %. The crude protein ranged from 4.26 - 13.01 % , sample AC1 (50% aerial yam — 50 % cowpea) has the highest crude protein value of 13.01 %, The crude fibre ranged from 0.60 - 0.23 % , sample AC1 containing (50 % aerial yam - 50 % cowpea) has the highest crude fibre of 0.60 % , The ash ranged from 1.21 - 0.97 % sample AC1 (50 % aerial yam - 50 % cowpea) has the highest ash content of 1.21 % , the fat content ranged from 0.51 - 0.67 %, sample AC4 (100 % Aerial yam) has the highest fat content of 0.67 %, The carbohydrate ranged from 61.18 - 75.09 % , sample AC4 (100 % Aerial yam) has the highest carbohydrate content of 75.09 % , the energy value ranged from 303.87 - 323.47 KJ, sample AC4 (100 % Aerial yam) has the highest energy value of 323.47 KJ. The result of the antinutrients shows that there was no significant difference in the tannin value of all the samples. The phytate ranged from 0.28 - 0.48 mg/lOOg. Sample AC4 (100 % Aerial yam) has the highest phytate value of 0.48 mg/lOOg, there was no significant diference in the saponin value of all the samples. The oxalate ranged from 0.47 - 0.9 mg/lOOg, sample AC4 (100 % Aerial yam) has the highest oxalate value of 0.93 mg/lOOg. sample AC1 (50 % aerial yam - 50 % cowpea) and AC2 (60 % Aerial yam - 40 % Cowpea) has the highest alkaloid values of 0.94 and 0.87 mg/lOOg. For the glycemic index the sample sample AC1 (50 % aerial yam - 50 % cowpea) has the highest glycemic index of 80.67 mmol/L while sample AC2 (60 % aerial yam - 40 % cowpea) has the lowest glycemic index of 70.25 mmol/L , sample AC3 (80 % aerial yam - 20 % cowpea) has a glycemic index of 74.65 mmol/L, sample AC4 (100 % Aerial yam) has a glycemic index of 80.44 mmol/L, The results also indicated that sample AC4 (100 % Aerial yam) had the highest glycemic load of 60.40 g while sample AC2 (60 % Aerial yam - 40 % cowpea) has the lowest glycemic load of45.71 g