Matter Transfer in Liquid-solid Extraction of Democratic Republic of Congo Gourd Seeds Oils by “Kunyima Method”

Kaseya

Ntumba

et al. 2019

IRJPAC

Self Cite

Background: The poisoning, one of the nowadays most serious problem of public health in Democratic Republic of Congo since two decades, has made many victims because of the lack of information and because of the population impoverishment unable to accede to health care. The Democratic Republic of Congo has a very rich and diversified vegetable patrimony with known therapeutic properties needing only appropriate technology to deal with the extraction process of oils or active principles. Aim and Objective: The overall purpose pursued is to endue the country with appropriate (home) technology to solve somewhat the public health problem in DRC. The kinetic study of oil transfer from liquid- solid extraction has been undertaken in view of the phenomenon uptake in order to make possible home technology of reactors sizing, nowadays absent in underdeveloped countries. This is a technical work related to the extraction, modeling and quantification of moringa seeds oil. Methodology: KUNYIMA method has been successfully extended to the moringa seeds oil extraction in petroleum ether using Soxhlet device to assess its validity. The figures have been plotted by means of Origin 8 program. Results: When log⁡〖1/(m_(o_e )-m_e )〗 is plotted as a function of time, linear behavior has been obtained at constant temperature (56°C) in dilute medium. The global kinetic constant of this time dependent phenomenon has been calculated [(k=1.2607±0.0591) h^(-1)] to make possible the reactor building for the oil production. The comparison of some parameters of extraction ( me , k ,....)between gourd seeds oil and moringa seeds oil measured and calculated in the same experimental conditions shows in petroleum ether a greater kinetic activity of solvent for gourd seeds oil than for moringa seeds oil followed by significant extraction of gourd seeds oil as fast as the time advanced (kGSO > kMSO). This observation suggests the existing difference of structures between the two species as it is hereby discussed. Moreover it has been pointed out previously that if the difference in absolute value is not of the same errors magnitude order it would interpret the solvent effect. It should be noted however it has been observed the ratio [m_s/m_e >1] where the kinetic constant is high (gourd seeds oil) and m_s/m_e <1 where the kinetic constant is low (moringa seeds oil) and this ratio might likewise better give information on solvent effect. Prediction is done of getting possibility of sigmoid curve in the case of the presence of different solvation equilibria. Also the sigmoid obtaining depends likely on both the structure of extractant solvent and the structure of extracted material. In that case the kinetic constant will be calculated in the upright region of sigmoid curve. Conclusion: Kunyima method has been successfully used in the case of moringa seeds oil extraction. Kunyima method consists in best uptake of the phenomenon, in expressing it in suitable mathematical model in order to determine its velocity through its kinetic constant before sizing the experimentation reactor. The reactor volume depends on both the sizing factor and the desired volumic debit.

“…6. The index th means theoretical, it has been introduced to be congruent with the previous work [24].…”

Section: Resultsmentioning

confidence: 99%

“…All those values have been inscribed in Table 2 and compared to gourd seeds oil extraction values [24].…”

Section: Resultsmentioning

confidence: 99%

Section: Oil Extraction Protocolmentioning

confidence: 99%

Section: Oil Extraction Protocolmentioning

confidence: 99%

“…The data were compared to gourd (Cucurbita pepo) seeds oil extraction values obtained in previous works of the group [24].…”

Section: Moringa Seeds Oil At 27°cmentioning

confidence: 99%

See 3 more Smart Citations

Democratic Republic of Congo Moringa Seeds Oil Extraction: Kunyima Method Application

Kaseya

Ntumba

et al. 2019

IRJPAC

Self Cite

Kinetic and Thermodynamic Study of Extraction of Oleoresin Containing Curcuminoids from Turmeric (Curcuma Longa L.)

Kuburhanwa²,

Kaseya³

et al. 2022

EJCHEM

Numerous studies are nowadays undertaken across the world laboratories on turmeric and show its excellent virtues in various fields such as medicine, pharmacology, cosmetics, and so forth. In this paper, to enlarge the domain of scientific knowledge, a kinetic and thermodynamic behavior of curcuminoid extraction from Curcuma longa L has been investigated in the dilute medium using ethanol as solvent under a magnetic stirrer. Through the KUNYIMA method, by means of the KUNYIMA first law, the global kinetic constant has been calculated at 250 rounds per minute (rpm) and the data have shown its Constance at 500 rounds per minute at the same temperature (27.5 °C). The kinetic constant can serve to build a commercial tank of production of curcuminoids using the sizing factor to endow the Democratic Republic of the Congo with its home technology of curcuminoids extraction as is hereby discussed. Extraction enthalpy and entropy have been calculated in a closed system using the Arrhenius relation. The results of enthalpy indicate that the extraction of curcuminoids is an endothermic phenomenon. This endothermic behavior of the extraction of curcuminoids in ethanol under a magnetic stirrer probably suggests the predominance of the enol form of curcumin in presence of its tautomeric ketone form. Also, the extraction of curcuminoids in ethanol is an endothermic phenomenon and this last phenomenon probably suggests its non-bioavailability. The energy promoting solubilization of curcuminoids arises from the solvent, under a magnetic stirrer, that can meet its alike with the hydroxyl group (like dissolves like). The value of the variation of entropy has evidently suggested the disturbance of the natural order after extraction. Note that KUNYIMA's second law has been hereby announced.

Kunyima Method Validity in Sesame Seeds Oil Extraction "Democratic Republic of Congo"

Kaseya

Lusamba

et al. 2021

CSIJ

Self Cite

Background: The very rich vegetable patrimony of Democratic Republic of Congo (DRC) demands a local abundant production of its fruits, roots and seeds by means of appropriate technology to relieve somewhat the problem of population health because indeed those fruits, seeds, roots and leaves are reputed to have very excellent virtues in various fields such as medicine, pharmacology, cosmetic products, food and so forth. Prior to this work papers have been published on Gourd seeds oil and Moringa seeds oil extractions in order to size a continuous stirrer pilot tank of extraction. KUNYIMA method has been successfully used and is still successfully used in this present article concerning sesame (Sesamum indicum L.) seeds oil extraction in dilute medium. Aim and Objective: In this paper it can be seen the reasoning leading to KUNYIMA method is relevant and can be used to size commercial tank giving thus home rational technology. Methodology: The Soxhlet extraction of oil from sesame (Sesamum indicum L.) seeds has been performed in dilute medium using petroleum ether as solvent. Results: The obtained results are satisfactory and are perfectly in agreement with the proposed model. Commercial tank construction on rational calculation is now possible. Conclusion: KUNYIMA method once more is valid and allows to calculate the sizing factor needful to determine the reactor optimal volume.