Santoso, Umar, Novia Tabahana, HHenny Krissetiana, and ,Suhardi. 2013. “PENGGUNAAN RESPONSE SURFACE METHODOLOGY UNTUK OPTIMASI PROSES DEKAFEINASI MENGGUNAKAN KITOSAN DARI KULIT UDANG [The Use of Response Surface Methodology in Decaffeination Process With Chitosan]”. Jurnal Teknologi Dan Industri Pangan 13 (1), 60. https://journal.ipb.ac.id/index.php/jtip/article/view/7027.