Polyphenolic content and bactericidal effect of Mexican Citrus limetta and Citrus reticulata

Abstract

In this study, total phenolics, total flavonoids, hesperidin and ascorbic acid contents in bagasse, juice and seed of mexican sweet lime (Citrus limetta) and mandarine (Citrus reticulata) were determined at two commercial maturity stages (maturation index), as well as their bactericidal effect on Escherichia coli and Staphylococcus aureus. The results showed that bagasses had the highest total phenolics, total flavonoids, and hesperidin content for both, C. limetta, and C. reticulata; highest ascorbic acid contents were found in C. limetta juice (3.36 ± 0.25 mg g -1 DW) and C. reticulata bagasse (3.83 ± 0.37 mg g -1 DW). All tested extracts showed bacterial growth inhibition at 50 and 800 lg mL -1 . Bagasse extracts of both fruits showed the highest inhibitions ([90%) on tested bacteria. Total phenolics, total flavonoids, and hesperidin contents, as well as bactericidal effect increased with maturity. Results indicated that both Mexican citric fruits (C. limetta and C. reticulata) were good sources of antioxidant and bactericidal agents.

Effect of Different Extraction Methods and Geographical Origins on the Total Phenolic Yield, Composition, and Antimicrobial Activity of Sugarcane Bagasse Extracts

“…Further, the TPC extracted from SCB was higher than the 3.91 mg GAE/g obtained from B-type molasses ( 27 ) and the 3.751 mg GAE/g from molasses retrieved from sugar mills in Pakistan ( 28 ). Compared with other industrial byproducts, this study's SCB TPC was lower than the 0.38 mg/GAE extracted from Citrus limetta bagasse ( 29 ). It was also lower than the TPC extracted from six different white and red wine grape wastes, which showed TPC in a range of 32–59 mg GAE/g ( 30 ).…”

Antimicrobial, Shelf-Life Stability, and Effect of Maltodextrin and Gum Arabic on the Encapsulation Efficiency of Sugarcane Bagasse Bioactive Compounds

“…This study’s TPC from sugarcane bagasse is lower than the TPC extracted from Citrus limetta bagasse (20.38 mg GAE/g) [ 32 ]. It is also lower than the TPC extracted from six different white and red wine grape waste, valued within a range of 32 to 59 mg GAE/g [ 33 ].…”

Influence of Deep Eutectic Solvents (DESs) on Antioxidant and Antimicrobial Activity of Seed Extracts of Selected Citrus Species

“…Because of its unique aroma and bioactive components content, lemon seed oil might be preferable for functional food, pharmaceutical and cosmetic applications [9,16]. Health-related properties of Citrus species include antiviral, anti-inflammatory, antimicrobial, hepatoprotective effects and many others [15,17,18,19,20]. Some studies have shown that the antioxidant and anti-inflammatory properties of Citrus flavonoids can be helpful against degenerative diseases, particularly brain diseases, as well as cardiovascular diseases and some types of cancer [3,6,18].…”