Buletinul Institutului Politehnic din Iași Secția Chimie și Inginerie Chimică ISSN: 2537-2947
ISSN-L: 0254-7104
2024, Volume 70(74), Issue 3 (September), pp. 23 - 33
Phytochemical Screening of Sida Rhombifolia Knitting Extract Macerated
with Aloe Vera Gel to Combat Mosquito Attacks
DYDIMUS EFEZE NKEMAJA, University of Bamenda, Bambili, Cameroon SERGE ENAMA ETEME, University of Yaoundé 1, Laboratory of Parasitology and
Ecology, Department of Animal Biology and Physiology, Faculty of Sciences,
Cameroon ABDOURAMANE NSANGOU, University of Douala, Mechanical
Laboratory (LME), ENSET Douala, Cameroon, University of Douala, Mechanics
Laboratory, Research Group on Innovative Materials (GRMI), Cameroon FABIEN EBANDA BETENE, University of Douala, Mechanical Laboratory (LME),
ENSET Douala, Cameroon, University of Douala, Mechanics Laboratory, Research
Group on Innovative Materials (GRMI), Cameroon DOINA SIBIESCU, “Gheorghe
Asachi” Technical University of Iaşi, “Cristofor Simionescu” Faculty of
Chemical Engineering and Environmental Protection, Iaşi, Romania,
doina.sibiescu@academic.tuiasi.ro PIERRE MARCEL ANICET NOAH,
University of Douala, Mechanical Laboratory (LME), ENSET Douala, Cameroon,
University of Douala, Mechanics Laboratory, Research Group on Innovative
Materials (GRMI), Cameroon ACHILLE DÉSIRÉ BETENÉ OMGBA, University of
Douala, Mechanical Laboratory (LME), ENSET Douala, Cameroon, University of
Douala, Mechanics Laboratory, Research Group on Innovative Materials (GRMI),
Cameroon VALERY HAMBATÉ GOMDJÉ, Departments of Textile and Leather
Engineering, ENSPM, University of Maroua, Cameroon
Abstract The objective of this study is to identify the metabolites
in the extract of Sida rhombifolia fibers treated with Aloe vera gel using
colored reactions and thin-layer chromatography, following analytical
techniques. The results show that the three samples fibers not treated with
Aloe vera gel, fibers treated with Aloe vera gel, and washed treated fibers
contain flavonoids in low quantities. The first two samples also present
sterols and triterpenes in medium quantities, while the washed treated
fibers contain these in low quantities. Based on the chromatographic
profiles, it can be concluded that the untreated fibers, treated fibers, and
washed treated fibers extracts have nearly identical constituents, as the Rf
values of the different spots are the same. The UV light absorption profile
indicates the presence of chromophores responsible for this absorption,
specifically double and triple bonds, which are also confirmed by
fluorescence (π-π* transition). The different colors observed include yellow
for flavonoids, blue for triterpenes, black for alkaloids, and orange for
sterols. Looking ahead, the experiments recommended by the World Health
Organization (WHO) on the effectiveness of impregnated curtains in combating
mosquito attacks (cone test, cylinder test, and tunnel test) will be the
focus of future work. Keywords: Knitting, phytochemical, screening, Sida
rhombifolia