ɪn bˌaɪoʊkˈɛmɪstɹi, mˈɪkst ˈæsɪd fɜːməntˈeɪʃən ɪz ðə mˌɛɾəbˈɑːlɪk pɹˈɑːsɛs baɪ wˌɪtʃ ɐ sˈɪkskˈɑːɹbən ʃˈʊɡɚ ˈiː.dʒˈiː. ɡlˈuːkoʊs, ɪz kənvˈɜːɾᵻd ˌɪntʊ ɐ kˈɑːmplɛks ænd vˈɛɹɪəbəl mˈɪkstʃɚɹ ʌv ˈæsɪdz.
In biochemistry, mixed acid fermentation is the metabolic process by which a six-carbon sugar (e.g. glucose, ) is converted into a complex and variable mixture of acids.