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Roger Batubenga
University of Kinshasa
Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology Public Health

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Mineral composition and total polyphenol content of polysaccharide-rich extracts from the edible mushroom Auricularia delicata Alain Tshisuaka Nkongolo; Daddy Kanika Kileshe; Roger Batubenga; Clément Liyongo Inkoto; Gertrude Luswamu Mbumbu; Koto-Te-Nyiwa Ngbolua; Joseph Kasali Lumande; Jeff Bekomo Iteku; Simon Mpulusu Dibaluka
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1095-1101

Abstract

This study aimed to evaluate the biopharmaceutical potential of polysaccharides from A. delicata, commonly consumed as an edible mushroom by the populations of Kinshasa and its surroundings. This biopharmaceutical aspect makes the species a functional food and a source for the production of new drugs against several human diseases. The objective of the study is to measure the mineral composition and total polyphenol content present in extracts rich in polysaccharides from A. delicata. These compounds are reported in the literature as having antioxidant and other biological activities. The results obtained confirmed a moderate fraction of the total polyphenol content, detected at an absorbance of 10.256 ± 0.363 mg GAE/g, and mineral elements, of which iron is dominant in higher quantities than the 19 other minerals measured from polysaccharide-rich extracts. The mineral composition and total polyphenol content in polysaccharide-rich extracts of Auricularia delicata show how much the species is a source of functional food (alicament), with medicinal and therapeutic properties. The presence of these compounds (mineral elements and polyphenols) offers hope for the use of A. delicata in the biopharmaceutical field by the populations of Kinshasa and its surroundings, but also provides a basis for the development of biologically active molecules.
Cultivation of an edible mushroom species, Pleurotus sajor – caju (Fr.) Singer (1951) (Pleurotaceae) (strain 221114) on various lignocellulosic substrates. Roger Batubenga; Félicien Lukoki; Esther Mwambay; Daddy Kanika; Alain Tshisuaka; Jeff Iteku; Jean Paul Koto-Te-Nyiwa Ngbolua; Simon Dibaluka
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1399-1405

Abstract

The current food crisis and the continuing deterioration in the health of the populations of the DRC in general, and those of the province of Kongo Central in particular, are among the causes of severe pressure on natural environments, especially forests. In the long term, these risks creating scarcity or the disappearance of certain resources, including mushrooms. The main aim of this study is to contribute to the promotion of NTFPs in the fight against hunger and food insecurity through the cultivation of strain 221114 of the species Pleurotus sajor-caju, making sporophores available on a regular basis. To achieve this objective, we set ourselves the specific goals of determining the mycelial growth rate and comparing the yields obtained from strain 221114 of the species Pleurotus sajor-caju on fruiting substrates. The strain used in the culture was isolated in the Ngeba area, as shown in Figure 1 below, in the province of Central Kongo. The preparation of seedling media and the production of seedling whites, the preparation of final substrates, the addition of nutrients, incubation, fruit induction, and obtaining and harvesting sporophores were carried out at the Systematic Mycology and Myciculture Laboratory of the Life Sciences Department, Faculty of Science and Technology, University of Kinshasa, in room B28 and the department's experimental garden. The fungal material used was strain 221114 of Pleurotus sajor – caju. The plant material for the substrate consisted of rice straw, banana leaves, wood chips, sugarcane bagasse, and sawdust. Wheat bran and slaked lime were used as additives. The isolation method from tissue or tissue culture (known as monoculture) was used to start the culture. The best average sporophore yields were 35.01 ± 3.7% on rice straw, 28.67 ± 4% on wood chips, and 23.3 ± 2.4% on sugarcane bagasse, yields well above the theoretical yield of 20% at which a substrate is considered best and suitable for sporophore production. 
Co-Authors Alain Tshisuaka Alain Tshisuaka Nkongolo Clément Liyongo Inkoto Daddy Kanika Daddy Kanika Kileshe Esther Mwambay Félicien Lukoki Gertrude Luswamu Mbumbu Jean Paul Koto-Te-Nyiwa Ngbolua Jeff Bekomo Iteku Jeff Iteku Joseph Kasali Lumande Koto-Te-Nyiwa Ngbolua Simon Dibaluka Simon Mpulusu Dibaluka