Several palm plants have social and economic roles worldwide by providing drinks from their sap. In Côte d'Ivoire, management of the coconut sap is not yet practiced. In this study, parameters related to production of sap have been assessed from four coconut cultivars namely PB 113 + and PB 121 + hybrids and WAT and MYD varieties. From all the unopened inflorescences (spathes) studied into the coconut crown, whose ranks varied from 7 to 9, that of rank 8 yielded the highest volume of sap. From this spathe, the PB113 + hybrid provided the best yield of sap (61.81 ± 20.41 l). Most important proportion of that sap volume was recorded at the morning harvesting. The sap production duration of a spathe varied from 24 ± 1.87 days (MYD) to 46.78 ± 1.86 days (PB 113 + ). That duration depended on the length of spathes and regular sap flow allowed by them. Furthermore, the PB 113 + had the highest number of fruits (NBF = 174.33 ± 78.45 fruits). The results showed that volume of sap available is closely related to the length of production (r = 0.78) and the cultivar's nut yield (r = 0.82). The use of PB 113 + hybrid which provided highest quantity of sap is recommended for promoting the production of coconut sap in Côte d'Ivoire in order to improve the benefits derived from this plant.
Aims: A field survey was carried to apprehend the full diversity of Ivorian’s plantain. The aim was to produce a reliable and up-to-date production map of the local varieties. This study was also intended to determine their level of appreciation by local consumers on the basis of their physical, technological and sensory characteristics. Place and Duration of Study: The enquiries data were collected in 87 villages distributed into 22 regions of Côte d'Ivoire, between September and December 2017. Methodology: During the survey, data on the production, description, processing and consumption of local plantains were collected by direct individual interviews using a structured questionnaire. This information was collected in a participatory manner from 1232 (14 producers/villages). Results: This study identified twenty-two (22) varieties of plantain, traditionally cultivated for several generations in Côte d'Ivoire. The greatest varietal diversity has been observed in the South-East and the East, notably in the regions of Sud-Comoé, Indénié-Djuablin, Mé and Agneby-Tiassa. These varieties are variously appreciated according to their physical and organoleptic characteristics. People used them to make the usual plantain-based dishes found in Côte d’Ivoire. However, for the most questioned people, cooking specific plantain dishes requires the using of specific varieties with particular characteristics. The Agnrin, Molegna, N'gretia, Molekotoba, Ameletia, Purple banana and Banadiè varieties have been designated to be the best for “foutou”. In addition, the Banadiè variety, even in the green state, gives a nice yellow “foutou”. The above varieties are said to be perfect to prepare “Aloco”, “Docklounou” and “Clacro” at advanced ripening stages. The Afoto, Spotted banana, Kpatrè-kou, Kpatragnon, Kpatrè-n'san varieties, were recommended for “foutou”, “foufou”, roasted or chips because of their volume. Conclusion: Further researches are underway to explain, scientifically, the sensory and technological differences usually observed between local plantains varieties.
Cassava root is shortly preserved after harvesting due to its tanning and rapid physiological decomposition. Consequently, the commercial value is reduced and the craving of its finishes products. With an aim of improving physiological quality, post harvest food value "the effects of bleaching and conservation in silo-pits were evaluated. Four (04) varieties of cassava: Bocou1, Bocou2, Bo-cou3 and Yavo were collected fresh and healthy in 13 months of maturity. They were subjected to a bleaching (65˚C /15-30 s) followed by a kinetic conservation (7 days of intervals) in silo-pit (1 × 0.6 × 0.5 m). Results show that Bocou2 variety has the high proteins content (2.64% ± 0.01%), followed by hydrocyanic acid (8.21 ± 0.01 mg/100 g) and total carotenoids (26.7 µg/100 g). The conservation influences positively the protein content, reducing sugars content, the dries matter content and the total phenolic compounds for all the varieties excluded Bocou2 variety whose protein content drops. As regard of the fat contents, a weak increase is observed. The sensory analysis reveals that the boiled cassava of the Yavo variety is more appreciated followed by Bocou1 variety. Concerning the Attiéké, Bocou3 variety gives the more appreciated dish followed by the Yavo variety. In conclusion, the silo-pit conservation after bleaching improves the physiological quality of the cassava and the sensory taste even during 14 days. This study has a huge impact of reducing the post harvests losses and increases the commercial value of cassava in the world.
RESUMEPour réduire les dépenses et les pertes liées à la diffusion de la noix de coco, les hybrides PB121 ont été développés en utilisant la technique de culture in vitro. Mais ce type d'hybride de cocotier planté en 1984 n'est pas encore pleinement étudié du point de vue biochimique. Le but de cette étude est d'évaluer les caractéristiques biochimiques de l'eau des noix de coco matures de l'hybride PB121 selon la période de stockage. Le PB121 ordinaire a été utilisé comme témoin. Les noix ont été stockées pendant 4 semaines à l'air libre à la température ambiante. Les analyses ont portées sur la détermination de la masse de l'eau de coco, les teneurs en sucres totaux et réducteurs, les teneurs en cendre, en matière sèche, en protéines, le pH, l'extrait sec réfractométrique et l'acidité titrable. Les résultats ont montré une diminution de la masse de l'eau de coco (163,19 g à 140, 66 g) de la 1 ere à la 4 ème semaine de stockage. Les teneurs en sucre (27,66 mg/ml à 17,03 mg/ml), l'acidité titrable (270 méq/100g à 70 méq/100g) et la matière sèche (5,06 % à 3,79 %) ont également diminué au cours de cette période. D'autre part, la teneur en cendres et le pH a augmenté d'abord, puis a diminué à partir de la deuxième semaine de stockage. Les résultats ont montré une similarité globale entre les deux types d'hybrides. Cependant, l'eau de l'hybride PB121 issu de la culture in vitro est plus acide que celui de PB121 ordinaire. Elle peut donc être utilisée pour se rafraichir ou pour faire du vinaigre. © 2016 International Formulae Group. All rights reserved.Mots clés : Cocotier, eau de coco, hybride PB121, in vitro, stockage. Variation of biochemical characteristics of coconut water from in vitro culture (Cocos nucifera L.) during storage period ABSTRACTIn order to reduce expenses and losses related to the dissemination of the coconut, PB121 hybrids were developed using in vitro culture technique. But this type of coconut hybrid planted in 1984 is not yet fully investigated. The aim of this study was to assess the biochemical characteristics of water from mature coconuts B. R. KONAN et al. / Int. J. Biol. Chem. Sci. 10(3): 957-965, 2016 958 of this type of PB121 hybrid during the nuts storage period. The ordinary in situ PB121 was used as control material. The work consisted in determining water weight, sugar content, acidity, dry matter, ash content, pH, protein content and total soluble solids. The results showed a decrease of coconuts water weight (163.19 g to 140.66 g) from the 1st to 4th week of storage. Sugar content (27.66 mg/ml to 17.03 mg/ml), acidity (270 meq/100 g to 70 meq/100 g) and dry matter (5.06 % to 3.79 %) also declined during this period. On the other hand, the ash content and pH increased first and then decreased from the second week of storage. The results showed an overall similarity between the two types of hybrids. However, water of in vitro culture PB121 hybrid is more acidic than that of ordinary PB121. It can therefore be used for drinking or be used to make vinegar.
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