Comparative biochemical analysis and profiling of sucrose-metabolizing enzyme activity in female and hermaphrodite papaya fruits at different phenological stages
Year: 2025
Type: article
Abstract: Papaya (Carica papaya L.) is widely recognized as a nutraceutical or functional fruit due to its rich nutritional and medicinal properties.This study presents a comparative analysis of female and hermaphrodite papaya fruits at three phenological stages (mature, intermediate, and green), evaluating physical parameters (fruit and seed), biochemical composition (carbohydrates, proteins, and reducing sugars), and organoleptic properties of fruits.Enzymatic activities of sucrose synthase (SuSy), sucrose phosphate synthase (SPS), and acid invertase (AI) were assessed across maturity stages in both fruit types.Organoleptic evaluation revealed distinct preferences, with mature fruits of both types receiving favorable scores.Notably, female papayas were rated higher in aroma, flavor, and overall acceptability.Biochemical analysis indicated that female fruits contained higher levels of protein, reducing sugars, and carbohydrates.Enzymatic activity varied significantly with maturity: AI activity peaked in mature fruits but was lower in younger stages, whereas SuSy activity was highest in green fruits and declined with ripening.SPS activity remained stable in both fruit types.These findings suggest that AI and SuSy play pivotal roles in sugar accumulation during ripening, influencing fruit sink strength during development.This study compares sugar metabolism and consumer preference in female and hermaphrodite papayas to determine which yields sweeter fruit.The findings will guide improved cultivation practices and advance understanding of papaya fruit quality.
Source: Pure and Applied Biology
Author: Zunaira Riaz
Institution: University of Karachi
Language: English
Subfield: Complementary and alternative medicine
Field: Medicine
Domain: Health Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $200
Funder: University of Karachi
OpenAlex ID: W4409047974
