Semi Refine Carrageenan from Seaweed Eucheuma Cottonii Various Regional Origins Through Extraction of Various Alkalis: Semi Refine Karagenan Dari Rumput Laut Eucheuma Cottonii Berbagai Asal Daerah Melalui Ekstraksi Berbagai Alkali. pssh 2022, 3, 1166-1172. https://doi.org/10.21070/pssh.v3i.245.