Protein Nutritional Value of Nine Agaricus bisporus Hybrids

  Objective  Proteins in 6 newly bred hybrids of wild Agaricus bisporus were analyzed for nutritional value to aid breeding selection.

  Method   Along with 3 major A. bisporus varieties currently cultivated in Fujian as reference, 6 hybrids of wild germplasms were analyzed to determine their nutritional values based on protein and AA compositions. Scores of IOM, AAs, and chemistry, as well as AA ratio coefficient of the samples were evaluated with respect to the balanced AA spectra of WHO/FAO/UNU, IOM, and egg protein.

  Result   Among the various species of mushrooms, Fumo 63 was found to have the highest essential AA content of 46.76 g·100 g⁻¹protein, essential AA index of 94.45, essential AAs proportion of 41.72%, and adjusted AA digestibility of 86.73. All 6 hybrids contained significantly more protein and total, essential, medicinal, sweet, alkaline, and branched-chain AAs than did their brown wild A. bisporus parents.

  Conclusion   There appeared to be ample rooms for nutritional improvements by hybridizing the wild A. bisporus through upgrading the protein quality of the mushroom.