ɪɾ ɪz ɐ pɹˈɑːsɛs ʌv sˌɛpɚɹˈeɪʃən, pjˌʊɹɹɪfɪkˈeɪʃən ænd kˌɑːnsəntɹˈeɪʃən ʌv nˈætʃɚɹəl pɹˈɑːdʌkts, kˈɑːmplɛks ænd θˈɜːməli sˈɛnsᵻtˌɪv mˈɑːlɪkjˌuːlz fɔːɹ ɛɡzˈæmpəl vˈaɪɾəmɪnz ænd pˌɑːlɪˈʌnsɐtʃɚɹˌeɪɾᵻd fˈæɾi ˈæsɪdz.
It is a process of separation, purification and concentration of natural products, complex and thermally sensitive molecules for example vitamins and polyunsaturated fatty acids.