USE OF SEQUENT ADSORPTION WITH ACTIVATED NATURAL ZEOLITE AND ACTIVATED CHARCOAL AS ADSORBENT TO IMPROVE THE QUALITY OF WASTE COOKING OIL

Cooking oil which is exposed to high temperatures of up to 200 °C during the cooking process, leads to the formation of hazardous substances that are potentially dangerous to human health. However, people sometimes use the same cooking oil repeatedly without considering the negative effects that it causes. In this work, we investigated the use of two different types of adsorbent namely activated charcoal and activated zeolite sequentially to improve the quality of waste cooking oil (WCO) using the adsorption method. It was found that for 30 mL of WCO, the optimum dose of adsorbent was 7.5 g and the optimum contact time was 20 minutes. When these two types of adsorbent were applied sequentially for the purification of WCO at the optimum conditions, the result obtained indicated the lower value of the acid number, peroxide number, viscosity, and water content, compared to the WCO that treated only with a single type of adsorbent

DETERMINATION OF TOTAL TANIN CONTENTS OF Terminalia Catappa, L. LEAF EXTRACT AND TEST OF ITS ABILITY AS A COMPLEXION AGENT OF Fe (III)

A study of the essential oil content in basil (Ocimum sanctum) and red lemongrass (Cymbopogon nardus L. Rendle) originally grown in Flores island has been conducted. The purpose of this study was to identify the chemotype of the essential oils obtained over stahl distillation using GC-MS. The Ocimum mainly consisted of 55% eugenol following by minor trans-alfa-bergometena, patchulana, and linalool. Meanwhile, the chemotype of the red lemongrass (Cymbopogon nardus L. rendle) were citronellol (22%), citronella, cyclohexamethanol, and viridiflorol

Spectrophotometrically Determination of Fe(III) in Manganese Processing Waste Water with Ethanol Extract of Terminalia catappa L. Leaves as a Complexing Agent

Chemical analysis, including metal ions determination using the spectrophotometry method, involves using a complexing agent, mostly produced by chemical industries, reacting with the analyte to form a colored compound. The very high cost and the environmentally unfriendly are the main disadvantages of that complexing agent. The use of a complexing agent categorized as a “green” chemical is critical to overcoming those shortcomings. In this work, extract ethanol of Terminalia catappa L. leaves was employed as a complexing agent in the determination of Fe(III) from aqueous media using the spectrophotometry method.  The value of correlation coefficient (r) 0.993, obtained from the calibration curve, indicated that ethanol extract of Terminalia catappa L. leaves could be applied as a complexing agent for determining Fe(III) from aqueous media using the spectrophotometry method. By comparing this complexing agent with the commonly used complexing agent of Fe(III) viz KSCN, it was found that these two complexing agents did not differ significantly in the term of precision. Unlike precision, the accuracy obtained from these two complexing agents still differs significantly. When both complexing agents were applied in the determination of Fe(III) in manganese processing waste water, we found the concentration of Fe(III) was 0.009 ppm (ethanol extract as complexing agent) and 0.0076 ppm (KSCN as complexing agent). It is recommended to purify the extract before using it as a complexing agent for Fe(III) determination.&nbsp

Sintesis Senyawa C-2,8,14,20-TETRA-(2,4,5-Trimetoksi)Fenil Kaliks[4] Resorsinarena dari Senyawa 2,4,5-Trimetoksi Benzaldehida

The synthesis of C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene from 2,4,5-trimethoxy  benzaldehyde has been done. Through isolation of asaron from Timor Genoak (Acorus calamus) followed by its oxidation with K2Cr2O7, the C-2,8,14,20-tetra-(2,4,5-trimethoxy)phenyl calix[4] resorcinarene has, therefore, been accessed over reflux. The asaron has been isolated as 3.05% of yellow oil whilst, the oxidation produced 2,4,5-trimethoxy benzaldehyde with the yield of 49.49%. The C-2,8,14,20-tetra-(2,4,5-trimethoxy) phenyl calix[4]resorcinarene has been yielded as 89.29% of a brown solid.Telah dilakukan sintesis senyawa C-2,8,14,20-tetra-(2,4,5-trimetoksi)fenil kaliks[4] resorsinarena dari 2,4,5-trimetoksi benzaldehida. Penelitian ini dilakukan dengan tahapan isolasi senyawa asaron dari tanaman genoak (Acorus calamus) asal pulau Timor, oksidasi asaron menggunakan K2Cr2O7 dan terakhir sintesis C-2,8,14,20-tetra-(2,4,5-trimetoksi)fenil kaliks[4]resorsinarena dengan metode refluks. Isolasi senyawa asaron menghasilkan produk berupa minyak berwarna kuning dengan rendemen 3,05%. Hasil oksidasi senyawa asaron menghasilkan senyawa 2,4,5-trimetoksi benzaldehida dengan rendemen 49,49% dan sintesis senyawa C-2,8,14,20-tetra-(2,4,5-trimetoksi)fenil kaliks[4]resorsinarena menghasilkan padatan cokelat dengan rendemen 89,29%

Dietary shochu kasu alleviates fatty liver induced by orotic acid

The effects of dietary shochu kasu (5%) on orotic acid-induced fatty liver were studied in rats. Liver triglyceride content of orotic acid-fed rats increased by 5-fold in comparison to basal group.  Shochu kasu reduced triglyceride content by two-third.  The activities of fatty acid synthase and phosphatidate phosphohydrolase significantly decreased that was approximately by 35% and 20%, respectively. The serum lipid levels however were nearly unchanged. The alleviation of fatty liver in rats with shochu kasu, therefore, was associated with the inhibition of fatty acid synthase and phosphatidate phosphohydrolase activities