Effects of a lacto-ovo-vegetarian diet on the free amino acid composition of wax-stimulated whole human saliva

J Nutr. 1985 May;115(5):588-92. doi: 10.1093/jn/115.5.588.


The free amino acid composition of whole saliva was determined for nine lacto-ovo-vegetarians and their age- and sex-matched controls. Concentrations of glycine, serine, proline, glutamic acid plus glutamine and delta-aminovaleric acid were significantly higher in the lacto-ovo-vegetarians than in the controls. Elevated proline levels in saliva were associated with increased concentrations of delta-aminovaleric acid and glycine. The results are discussed in terms of increased protein breakdown and/or altered metabolism of salivary microorganisms due to a lacto-ovo-vegetarian diet.

MeSH terms

  • Adult
  • Amino Acids / analysis*
  • Chromatography, Gas
  • Dental Calculus
  • Dental Plaque
  • Diet, Vegetarian / adverse effects*
  • Female
  • Humans
  • Male
  • Periodontal Diseases / etiology
  • Saliva / analysis*
  • Saliva / metabolism


  • Amino Acids