Low-calorie acid-stable sweeteners from natural sweet syrups via amino acid fractionation
A research-driven approach to recover and purify sweet-tasting amino acids, peptides, and proteins from natural syrups such as honey, agave, and maple. Using acidity-controlled processing and separation techniques, the work targets dextrorotatory amino acid fractions that deliver high sweetness with low-calorie, acid-stable properties for food and beverage applications.
Overview
Natural sweet syrups including honey, agave, and maple contain sugars alongside amino acids and proteins that may contribute to perceived sweetness. This research focuses on fractionating these syrups to isolate dextrorotatory amino acids, peptides, and proteins known for their sweet taste characteristics. The resulting purified fractions are intended to function as low-calorie sweeteners with strong acid stability, addressing growing consumer and industry demand for natural, reduced-calorie sweetening solutions.
Technical specifications
- Source materials: Natural sweet syrups such as honey, agave, and maple
- Target compounds: Dextrorotatory (+) amino acids (for example D-proline, D-leucine, D-alanine), peptides, and proteins with high sweetness intensity
- Processing approach: Low pH conditions combined with solubility- and density-based separation, including centrifugation and bioactive-sensitive drying technologies
- Chirality management: Processing conditions designed to preserve or modify amino acid chirality toward dextrorotatory forms, based on prior observations that acidic media and physical treatments influence enantiomeric composition
- Analytical methods: NMR and chiral HPLC for composition and structural analysis, with organoleptic and flavor evaluation procedures for sweetness assessment
- Stability evaluation: Testing of amino acid fractions under low pH and thermal conditions to confirm acid and heat stability
Technology readiness level
The concept is at an early research stage, building on preliminary laboratory findings related to chirality modification under acidic conditions. A systematic validation plan has been defined, spanning chemical profiling, separation method development, enantiomeric analysis, stability testing, and sensory evaluation over approximately six months. The work is positioned for collaborative development with industry partners interested in natural, low-calorie sweetener innovation.
About McGill University
McGill University is a comprehensive public research university in Montréal, Québec, known for an international community and a research‑intensive culture. Faculty and industry collaborate through shared core facilities and co‑located labs across downtown and hospital sites, with integration into a major hospital system enabling clinical research and translation. Proximity to Montréal’s established industry clusters and a vibrant innovation district give companies access to talent, pilots, and testbeds. Research is supported by Canada’s Tri‑Agency and the Canada Foundation for Innovation, alongside provincial and philanthropic sources. A dedicated technology transfer office streamlines contracting and IP, supports licensing and sponsored research, and connects partners to startups and entrepreneurship resources.
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