Murhadi, Murhadi and AS, Suharyono and Hidayati, Sri and Merti A, Pamela (2018) AKTIVITAS ANTIMIKOBA PODUK ETANOLISIS MINYAK INTI SAWIT YANG DITAMBAH ASAM OGANIK (Antimicrobial activities of PKO ethanolysis products that added organic acid). In: Nasional Seminar on Researh Results by LPPM Unila on November 13, 2018 in Bandar Lampung, November 13, 2018, Bandar Llampung. (In Press)

[img] Text (This article was presented at the national seminar on some of research results by LPPM Unila on November 13, 2018 in Bandar Lampung)
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The palm kernel oil (PKO, yellow) which is produced from the oil palm plant (Elaeis quineensis Jacq) which can reach yield of 50% (w/w) of the total palm kernel. Fatty acids composition in PKO is dominated by lauric acid (C12:0; 45%) and myristic acid (C14:0; 18%). This study aims to determine the effect of adding organic acids (lactic acid, succinic acid or tartaric acid) to the pH value and antimicrobial activity of crude ethanolysis products of PKO. The method used is descriptive method with 3 replications, consisting of two treatment factors. The first treatment factor was the type of organic acids (A), consisting of 4 levels: (1) without addition of acid (control), (2) addition of lactic acid (A1), (3) addition of succinic acid (A2), and (4) addition of tartaric acid (A3). The second factor is concentration (K), consisting of 4 levels: 10% (K1), 20% (K2), 30% (K3) and 40% (K4) (w/w). The results showed that the type and amount of added acid can reduce the pH value and increase the antimicrobial activity of PKO ethanolysis products. The pH value of PKO ethanolysis products with the addition of organic acids ranged from 1.60 to 6.18. The PKO ethanolysis products with added sucsinic acid of 40% (w/w) showed the highest antibacterial activities against to Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922 with d values, 10.02 mm (± 0.24 mm) and 9.59 mm (± 2.52 mm), main while to others microbe tester are relatively low antimicrobial activities (d values < 5.00 mm). Key words: ethanolysis, PKO, organic acids, antimicrobial activity.

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Teknologi Hasil Pertanian
Depositing User: MURHADI
Date Deposited: 19 Nov 2018 04:17
Last Modified: 19 Nov 2018 04:17

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