Soursop (Annona muricata L.) seed extracts: phytochemical composition and biocontrol potential against cercosporiosis in okra (Abelmoschus esculentus L. Moech)

-Hubert Bolie; Libert Brice Tonfack; Sylvere Landry Lontsi Dida; Patrice Zemko Ngatsi; Juste Philantrope Abega; Eric Bilo’a Ndongo; Claire Stéphane Tsogo; Tize Tize; and Bekolo Ndongo.

Abstract Background: Annona muricata, or soursop, is a tropical plant known for antimicrobial and antiparasitic properties, widely used in traditional remedies. Extracts from leaves, seeds, and bark show activity against pathogens in humans and plants, making it a promising candidate for natural biopesticide development as safer alternatives to chemical controls. This study evaluates Annona muricata seed extracts as bio-fungicides against Cercospora leaf spot in okra under field conditions. ...

Seroprevalence of hepatitis C among blood donors at the National Blood Transfusion Center (NBTC) of N’Djamena in 2022: a cross-sectional and analytical study

-Abakar Hassan Gadou; Al Cherif Hamid Mahamat; Aurelie Solange Ntso Agume; Abderrazzack Adoum Fouda; Renaud Nonmarmbaye; Fangbo Bruno Amboussidi; and Nicolas Yanou Njintang

Abstract Background: In Africa, hospital blood demand is important; but inadequately managed and hence hazardous. So far, only a few studies in Chad have reported hepatitis C among blood donors and examined its influence on their clinical state. The goal of our study was to assess hepatitis C seroprevalence among blood donors at the National Blood Transfusion Center (NBTC) in Ndjamena, identify risk factors, and analyze the biochemical profile. Methods: A descriptive and cross-sectional s...