Effects of Water Content on Volatile Generation and Peptide Degradation in the Maillard Reaction of Glycine, Diglycine, and Triglycine
- 7 July 2005
- journal article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 53 (16), 6443-6447
- https://doi.org/10.1021/jf050534p
Abstract
Peptides abundant in food and protein hydrolysates are known to be important to process flavors. The present study reports the volatile profile of the Maillard reactions of glycine, diglycine, and triglycine. The reaction with glucose was conducted at 0−100% water content in glycerol medium at 160 °C for 1 h. Volatile compounds were quantified by stir bar sorptive extraction−gas chromatography−mass spectrometry, and nonvolatile compounds were quantified by high-performance liquid chromatography−tandem mass spectrometry. The major volatiles produced from each of the reaction systems were trimethylpyrazine and 2,5-dimethylpyrazine. Volatile generation increased as water decreased, and the overall reactivity of the glycine and glycine peptides in volatile formation was glycine ≈ triglycine > diglycine. Triglycine was very unstable and mainly degraded into cyclic Gly-Gly and glycine, whereas diglycine had a higher stability than triglycine toward hydrolytic cleavage of the peptide bond. The amounts of glycine, diglycine, cyclic (Gly-Gly), and triglycine in the peptide−glucose reaction mixtures at different water content were reported. Keywords: Peptide; volatiles; SBSE; glycine; water content; diketopiperazine; LC−tandem MSThis publication has 16 references indexed in Scilit:
- Antioxidative Activities of Fractions Obtained from Brewed CoffeeJournal of Agricultural and Food Chemistry, 2004
- Characterization of Key Odorants in Dry-Heated Cysteine—Carbohydrate Mixtures: Comparison with Aqueous Reaction SystemsPublished by American Chemical Society (ACS) ,1998
- Reactive intermediates and carbohydrate fragmentation in Maillard chemistryFood Chemistry, 1998
- Mechanisms of Formation of Alkylpyrazines in the Maillard ReactionJournal of Agricultural and Food Chemistry, 1995
- Isomerization and losses of trans-.beta.-carotene in sweet potatoes as affected by processing treatmentsJournal of Agricultural and Food Chemistry, 1988
- The Variety of Odors Produced in Maillard Model Systems and How They Are Influenced by Reaction ConditionsPublished by American Chemical Society (ACS) ,1983
- Glucose-diglycine condensation product participating in oxygen-dependent browningJournal of Agricultural and Food Chemistry, 1975
- Isolation and identification of acidic oligopeptides occurring in a flavor potentiating fraction from a fish protein hydrolysateJournal of Agricultural and Food Chemistry, 1975
- Influence of water content and water activity on the sugar-amino browning reaction in model systems under various conditionsJournal of Agricultural and Food Chemistry, 1972
- Volatile components of roasted peanutsJournal of Agricultural and Food Chemistry, 1971