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Articles by I. Gouado
Total Records ( 4 ) for I. Gouado
  A. Demasse Mawamba , I. Gouado , M. Leng , I. Some Touridomon and F. Tchounanguepo Mbiapo
  To promote the consumption of squashes flesh, the vitamin A potential of steamed-dried squashes from Cameroon was evaluated in determining the beta-carotene content through HPLC method in raw, steamed and steamed-dried peeled flesh of three squashes species: Cucurbita moshata cv. Dickinson, Cucurbita maxima cv. Hungarian Blue and Cucurbita pepo cv. Sacred Indian Rattle. The vitamin C and total lipids contents were also titrated with 2, 6 dichlorophenol indophenol dye and extracted with hexane in a soxhlet apparatus for 6 h, respectively. The moisture content was estimated by drying in an oven at 105°C until constant weight. The beta-carotene contents of dried steamed squashes were 2834.75±11.22; 3043.91±1.65 and 5917.83±720.49 μg/100 g serving of C. pepo, C. moshata and C. maxima, respectively. The vitamin C contents ranged from 5.70±0.32 μg/100 g serving (C. moshata) to 11.81±0.19 μg/100 g serving (C. maxima). Total lipids ranged from 6.22±0.00 g/100 g serving (C. pepo) to 7.09±0.11 g/100 g serving (C. moshata) and the water remaining ranged from 6.39±1.18 g/100 g serving (C. maxima) to 8.19±0.70 serving (C. pepo). Drying of steamed squashes seemed to result in a significant concentration of beta-carotene content (71 and 89 times higher than those of steamed squashes). The same effect was observed for the vitamin C content (about 1.7 times) and the total lipid content (6 to 12 times). These results suggest that as a ready to eat product, steamed-dried squashes could contribute to fight against vitamin A deficiency if they are well conserved.
  M.S. Leng , I. Gouado and R. Ndjouenkeu
  The influence of blanching parameters (time and temperature), variety and yam thickness on cellular exchanges and on calcium, ascorbic acid and β-carotene contents during blanching and/or subsequent drying was investigated. Yam slices (2, 3 and 4 mm thickness) of the yellow and orange variety of D. schimperiana were blanched in hot water at 70 and 100°C for 0 to 60 sec in order to study the cellular exchange during blanching. Kinetic of calcium loss was determined during blanching at 100°C. Yams slices of the orange variety blanched at 100°C for one minute were dried at 50°C in a cross flow cabinet dryer. Losses in β-carotene and ascorbic acid were calculated after one minute of blanching at 100°C and along the drying process. The results show a strong intraspecific variability in cellular exchange during blanching. Blanching in hot water at 100°C result in a higher loss in calcium, β-carotene and ascorbic acid. These losses continue during subsequent drying. The moisture diffusivity during drying of blanched slices varied from 1.07x10-10 (4 mm) to 4.33x10-11 (2 mm). Twenty six to fifty percent of the β-carotene and more than 50% of ascorbic acid were loss during blanching depending upon slices thickness. Blanching is the limiting factor in β-carotene and ascorbic acid loss during blanching and subsequent air drying. Blanching parameters (temperature and time), slices thickness and variety influenced cellular exchanges and losses in calcium, β-carotene and ascorbic acid.
  A.E. Nouck , V.D. Taffouo , E. Tsoata , D.S. Dibong , S.T. Nguemezi , I. Gouado and E. Youmbi
  The impact of stress caused by NaCl on the growth, yield, micronutrient acquisition and the biochemical constituents of tomato (Lycopersicum esculentum L.) cultivars exhibiting differences in salt-tolerance was examined in a greenhouse and field conditions. Plants were subjected to four levels of NaCl (0, 50, 100 and 200 mM). Results showed a significant reduction (p<0.05) of dry weights of roots, shoots and whole plants, number of fruit per plant, flowering time, fruit yield, fruit weight per plant, number of flowers per plant and harvest index in cvs. Xewel, Mongal, Jaquar and Nadira (salt-sensitive) at 50 mM NaCl while those parameters were drastically decreased by salinity in salt-moderately tolerant cv. Ninja and salt-tolerant cv. Lindo at 100 and 200 mM NaCl, respectively. The NaCl addition leads to a decrease of Cu, Zn and Fe contents in leaves of all cultivars while soluble proteins (PR), carbohydrates (CH), total Free Amino Acids (FAA) especially proline (PRO) contents significantly (p<0.05) increased in leaves of cv. Lindo than others. The main strategy of salt-tolerance in cv. Lindo seems to be increased osmotic adjustment through the strongly accumulation of PR, CH and PRO in leaves. The PR, CH and PRO could be used as potential biochemical indicators of early selection and osmotic adjustment ability for salt-tolerant plants. Results also showed a relatively higher tolerance of cv. Lindo to all yield components and micronutrient uptake than others, suggesting that Lindo cultivar could increase tomato production on salt affected soils.
  J.B. Pankoui Mfonkeu , I. Gouado , H. Fotso Kuate , O. Zambou , G. Grau , V. Combes and P.H. Amvam Zollo
  This study carried out from January to June 2007, was undertaken to describe the clinical presentation of childhood malaria in Douala, a meso-endemic area as far as malaria transmission is concerned. One hundred and seventy eight children were enrolled after informed consent of their parents. The sample characteristics were recorded and clinical as well as preliminary laboratory investigations were performed. Thirty eight children coming for vaccination and counselling was targeted to serve as control. According to the results obtained, cerebral malaria (CM) seems to be associated with young age, whilst Malaria anaemia (MA) was predominant among older children. Hyperpyrexia and hyperparasitaemia were high among CM patients and 11.1% of them died, however, no neurological squeal was noticed immediately after discharge on those who survived. Haemoglobin and glycaemia were low on MA and CM patients; these groups had low percentage in bed nets utilization as well. These results suggest that the clinical presentation of the disease differ with the geographic location and malaria disease features varies according to the severity. Such studies could contribute to the management of the disease.
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