KARAKTERISTIK KARAGENAN SEMI-MURNI DARI RUMPUT LAUT Kappaphycus striatum DAN Kappaphycus alvarezii

Jurnal Teknologi dan Industri Pangan Pub Date : 2020-12-01 DOI:10.6066/jtip.2020.31.2.95

Lalu Danu Prima Arzani, Tjahja Muhandri, Nancy Dewi Yuliana

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引用次数: 5

Abstract

Kappaphycus striatum and Kappaphycus alvarezii are kappa carrageenan-producing seaweeds. K. striatum is also a source of iota carrageenan. The study was aimed to evaluate the effects of extraction time and alkali concentration on the characteristics of semi refined carrageenan (SRC) produced from seaweeds K. striatum and K. alvarezii. The SRC was extracted prepared by cooking dried seaweed samples in KOH solution (ratio seaweed:KOH solution= 1:40) with KOH concentrations of 6, 8 and 10% for 60 and 120 minutes at 70°C. The results showed that the best SRC characteristics produced from K. striatum seaweed were obtained from the extraction process at 6% KOH for 60 minutes which yielded 46.05±0.16%, carrageenan with gel strength of 362,07±21,44 g/cm2 and viscosity at 70°C 74 cP. Meanwhile the best characteristics of SRC produced from K. alvarezii seaweed were obtained from extraction in 10% KOH for 60 minutes having the highest yield of 39,03±0.95%, gel strength 1130.67± 16.34 g/cm2 and viscosity at 70°C of 59 cP. FTIR analysis showed that the functional groups which are kappa carrageenan and iota carrageenan characteristics were found in both samples at wave numbers of 846.97-847.09 and 800.53-801.29 cm-1, respectively.

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卡尔根半纯海藻和阿勒沃二海藻的特性

纹状Kappaphycus strimita和alvarezii是产生kappa卡拉胶的海藻。K.纹状体也是iota卡拉胶的来源。本研究旨在评价提取时间和碱浓度对海藻纹状藻和alvarezii生产的半精制卡拉胶（SRC）特性的影响。SRC是通过在70°C下在KOH浓度为6%、8%和10%的KOH溶液（海藻与KOH溶液的比例=1:40）中烹饪干燥的海藻样品60和120分钟来制备的。结果表明，在6%KOH下提取60min，得到46.05±0.16%，卡拉胶凝胶强度为362,07±21,44g/cm2，70°C下粘度为74cP，得到了纹状海苔的最佳SRC特性。同时，用10%KOH萃取60min，可获得alvarezii海藻生产的SRC的最佳特性，其最高产率为39.03±0.95%，凝胶强度为1130.67±16.34g/cm2，70°C粘度为59cP。FTIR分析表明，在波数分别为846.97-847.09和800.53-801.29 cm-1的两个样品中都发现了具有κ-卡拉胶和iota-卡拉胶特性的官能团。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Jurnal Teknologi dan Industri Pangan

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审稿时长

24 weeks