Marinho-Soriano E
Departamento de Oceanografia e Limnologia, Laboratório de Macroalgas, Universidade Federal do Rio Grande do Norte, Via Costeira, Praia de Mãe Luiza s/n, 59014-100, NatalRN, Brazil.
J Biotechnol. 2001 Jul 26;89(1):81-4. doi: 10.1016/s0168-1656(01)00255-3.
Yield, physical and chemical properties of agar from three agarophytes species (Gracilaria gracilis, G. dura and G. bursa-pastoris) were determined. The agar yield from the three species varied significantly (P<0.01). The highest yields of agar (34.8%) and the lowest (30%) were obtained from G. bursa-pastoris and G. gracilis, respectively. Highest gel strength (630+/-15 g cm(-2)) was obtained from agar extracted from G. gracilis and lowest from G. bursa-pastoris (26+/-3.6 g cm(-2)). The values of 3,6-anhydrogalactose were similar for G. gracilis and G. dura and there were no significant differences among the species. The sulfate contents varied significantly (P<0.01) and the higher value was obtained from G. bursa-pastoris. Among the three species, G. gracilis showed superior agar quality than the other two species, hence it can be considered a good potential source for industrial use.
测定了三种红藻（细基江蓠、硬江蓠和牧羊海菜）琼脂的得率、物理和化学性质。这三种红藻的琼脂得率差异显著（P<0.01）。琼脂得率最高的是牧羊海菜（34.8%），最低的是细基江蓠（30%）。细基江蓠提取的琼脂凝胶强度最高（630±15 g cm⁻²），牧羊海菜提取的琼脂凝胶强度最低（26±3.6 g cm⁻²）。细基江蓠和硬江蓠的3,6-脱水半乳糖值相似，不同物种之间无显著差异。硫酸盐含量差异显著（P<0.01），牧羊海菜的硫酸盐含量较高。在这三个物种中，细基江蓠的琼脂质量优于其他两个物种，因此可被认为是工业用途的良好潜在来源。
