Senyawa Asam Asetat

1. Membuat asam asetat dengan fermentasi aerob dari alkohol.

Media Peternakan, 2007

Phytate is commonly high in cereals grain. This compound can be extracted with acid solution. The purpose of this study is to extract phytic acid from pollard using acetic acid at the concentration of 0.1, 0.5, 1, and 5%. Pollard was fractionated using vibrator ball mill to evaluate the distribution of phytic acid in the particle of pollard. One percent of acetic acid was used to extract phytic acid from pollard at ratio of 1:1; 1:1.5; 1:2; and 1:3. The fraction having particle size of 16, 30 and 50 mesh had similar phytic acid content. The results indicated that phytic acid content of these fractions was higher than that of 100 and 400 mesh fractions. Whole pollard had higher phytic acid content than its fractions. Phytic acid in pollard can be extracted by 1% acetic acid solution. Extraction of phytic acid from pollard using 1% acetic acid solution at ratio of 1:3 produced 23.83 g/kg.

Minyak gondopuro sering digunakan sebagai minyak gosok dan banyak di jual di pasaran. Minyak gondopuro pasaran (minyak pasaran) mengandung metil salisilat 80-90 %. Asam salisilat hasil hidrolisis dari metil salisilat sudah lama digunakan untuk bahan dasar pembuatan aspirin. Metil salisilat dapat digunakan langsung sebagai bahan dasar sintesis flavonoid, tanpa harus dikonversi terlebih dahulu (Futwenbun, 2001).

Jurnal Teknologi dan Industri Pangan

Native ihur sago starch is a starch from Maluku and to date there is no report on its physicochemical properties. The objective of this work was to evaluate the effect of acetic acid concentration on the physicochemical properties of the native ihur sago starch. The starch was acetylated at different acetic acid concentrations, i.e., 0, 0.5, 1.5, and 2.5%. The acetylation was carried out by reacting ihur sago starch solution (100 g in 225 mL water) with acetic acid under alkaline condition. The acetyl group, degree of substitution (DS), water solubility, swelling power, paste clarity, and water, ash and amylose contents of the acetylated starch were measured. The study was conducted in three replications of non-factorial experiments using a completely randomized design. Starch modification through acetic acid addition produced ihur sago starch with different physicochemical characteristics from that of its native form. The acetylation caused the hydroxyl group in the starch to be su...

Asam urat sudah dikenal sejak 2.000 tahun yang lalu dan menjadi salah satu penyakit tertua yang dikenal manusia. Dulu, penyakit ini juga disebut "penyakit para raja" karena penyakit ini diasosiasikan dengan kebiasaan mengonsumsi makanan dan minuman yang enak-enak. Kini, asam urat bisa menimpa siapa saja, yaitu para penggemar makanan enak.

Asam azelat dihasilkan oleh biji-bijian seperti gandum dan barley. Biasanya digunakan dalam kosmetik dengan kadar konsebntrasi 20%. Biasanya asam azelat digunakan untuk perawatan terhadap jerawat, tapi ada penelitian yang menyebutkan bahwa zat ini juga efektif untuk memutihkan kulit. Riset lain menyebutkan bahwa asam azelat ini bisa menghambat produksi melanin.