Phytochemical screening and antifungal potentials of Citrus limon peels against Fusarium oxysporum and Rhizopus stolonifer causing rots in water melon (Citrullus lanatus L.)

Abstract

This study investigated the phytochemical constituents and antifungal potential of Citrus limon peels using aqueous and methanol extracts against Fusarium oxysporum and Rhizopus stolonifer causing rots in water melon. The result of phytocemical screening revealed the presence of Saponin, Tannin, Phenols, Alkaloid and Flavanoid. Pathogenicity test conducted showed that F. oxysporum and R. stolonifer causes rots of Citrullus lanatus. The extracts inhibited the growth of F. oxysporum (76.67% and 60.00 %) methanol and aqueous respectively. R. stolonifer growth was inhibited (85.93% and 71.11%) methanol and aqueous extracts. The fungitoxicity of synthetic fungicide Benomyl was 95.56%. The methanol extracts has highest inhibitory activity than aqueous extract. The result of the findings indicates the Biofungicide potentials of Citrus limon peels as alternative to synthetic fungicide in management of phyto-pathogens of water lemon.

Phytochemical Screening, GC Analysis and Antibacterial Activity of Citrus limon Peel Extract and Essential Oil

“…Glycosides were naturally cardioactive drugs used in the treatment of congestive heart failure and cardiac arrhythmia [27]. The presence of tannin and phenolic compound specified that the Citrus limon peels had potential antimicrobial properties [28]. (11.53 %) and thymol (9.79 %) as the major constituents of essential oil of lemon peels [29].…”

Citrus aurantium L. PEELS AND SEEDS: PHYTOCHEMICAL SCREENING AND ANTIBACTERIAL ACTIVITY

“…The most common classes of bioactive chemicals that function as main antioxidants or free radical scavengers are flavonoids, tannins, and polyphenols (Fidrianny & Johan, 2015). Citrus aurantium peels were known to have possible antibacterial effects due to the presence of tannin and phenolic chemicals (Bashir et al, 2020). According to literature, flavonoids are an ideal group of secondary metabolites in citrus products that may have natural potential and affect human wellbeing in ways such as antimicrobial, anti-inflammatory, anti-diabetic, anti-cholesterol emic, anti-inflammatory, and anti-carcinogenic (He et al, 1997;Vanamala et al, 2006;Huang & Ho, 2010;Chanet et al, 2012;Park et al, 2014).…”