Date of Publication
12-2023
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Chemistry Minor in Business Studies
Subject Categories
Chemistry
College
College of Science
Department/Unit
Chemistry
Thesis Advisor
Mariafe N. Calingacion
Defense Panel Member
Aldrin P. Bonto
Riann Martin Sarza
Abstract/Summary
This research investigates the chemical composition of Philippine duhat (Syzygium cumini l.) across different maturation stages: one-day, three-day, five-day, and seven-day-old samples. The study aimed to analyze the variations in titratable acidity, volatile compounds and the concentrations of essential and trace elements, including zinc, iron, lead, copper, chromium, and potassium. Advanced techniques such as Atomic Absorption Spectroscopy (AAS) and Gas Chromatography-Mass Spectrometry (GC-MS) were employed for a comprehensive analysis. Significant changes were observed in titratable acidity, indicating a maturation-dependent alteration in the taste profile and sugar content. The AAS results revealed stable concentrations of the analyzed metals, suggesting consistent metal profiles during the fruit's maturation. GC-MS metabolomic profiling uncovered an interesting phytochemical evolution. Early stages were marked by the presence of putatively identified Alpha-bergamotene, evolving to a more complex array of putatively identified sesquiterpenes such as Caryophyllene, Humulene, and β-curcumene in the later stages. The results indicate no significant variations in trace metal concentrations, while substantial changes in titratable acidity and soluble solids were observed, reflecting the dynamic nature of the biochemical processes during the maturation of duhat. These findings provide valuable insights into agricultural practices, food industry applications, and consumer awareness, emphasizing the potential of duhat in various domains.
Abstract Format
html
Language
English
Format
Electronic
Keywords
Syzygium—Analysis; Freeze-dried foods
Recommended Citation
Martinez, A. D. (2023). A multicomponent analysis of freeze-dried Philippine duhat (Syzygium cumini l.) across different maturation stages: Metals, metabolites, and titratable acidity. Retrieved from https://animorepository.dlsu.edu.ph/etdb_chem/54
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Embargo Period
12-10-2023
