scholarly journals ANALISIS KARAKTERISTIK MUTU SABUN TRANSPARAN BEKATUL BERAS MERAH (Oryza nivara) BERBAHAN DASAR MINYAK GORENG BEKAS

2020 ◽  
Vol 16 (02) ◽  
pp. 111
Author(s):  
Maria Mita Susanti ◽  
Syela Puspitaningtyas
Keyword(s):  
Rice Bran ◽  
Brown Rice ◽  
Quality Characteristics ◽  
Free Alkali ◽  
Damage Effect ◽  
Antioxidant Compounds ◽  
Cooking Oil ◽  
Oryza Nivara ◽  
Used Cooking Oil ◽  
Foam Power

ABSTRACT The free radicals exposure from daily activities can cause the damage the skin, therefore to avoid this damage effect can use antioxidants compounds . Brown rice bran is rice milling waste which has high antioxidant with IC50 is 43,2349 ppm. Efforts to increase the economic value of rice bran high in antioxidant compounds is by processing rice bran into transparent soap products. This research was conducted to analyze the quality characteristics of transparent red rice bran soap (Oryza nivara) based on used cooking oil. The quality characteristics of transparent rice soap which includes organoleptic soap, pH, foam power, free alkali, and water content. The data were analyzed descriptively by comparing the results of research with SNI 06-3532 -1994 Based on the results of the study obtained the results of the characteristics of soap that meets the quality characteristics of SNI 06-3532-1994 soap requirements with a pH of 10,2 , foam power of 2,54 cm, free alkali of 0,034%, and 3,85% moisture content. Keywords : transparent soap, brown rice bran, used cooking oil, solid soap quality characteristics

scholarly journals ANALISIS KARAKTERISTIK MUTU SABUN TRANSPARAN BEKATUL BERAS MERAH (Oryza nivara) BERBAHAN DASAR MINYAK GORENG BEKAS

2019 ◽  
Vol 16 (02) ◽  
pp. 26
Author(s):  
Maria Mita Susanti ◽  
Syela Puspitaningtyas
Keyword(s):  
Rice Bran ◽  
Brown Rice ◽  
Quality Characteristics ◽  
Free Alkali ◽  
Damage Effect ◽  
Antioxidant Compounds ◽  
Cooking Oil ◽  
Oryza Nivara ◽  
Used Cooking Oil ◽  
Foam Power

ABSTRACT The free radicals exposure from daily activities can cause the damage the skin, therefore to avoid this damage effect can use antioxidants compounds . Brown rice bran is rice milling waste which has high antioxidant with IC50 is 43,2349 ppm. Efforts to increase the economic value of rice bran high in antioxidant compounds is by processing rice bran into transparent soap products. This research was conducted to analyze the quality characteristics of transparent red rice bran soap (Oryza nivara) based on used cooking oil. The quality characteristics of transparent rice soap which includes organoleptic soap, pH, foam power, free alkali, and water content. The data were analyzed descriptively by comparing the results of research with SNI 06-3532 -1994 Based on the results of the study obtained the results of the characteristics of soap that meets the quality characteristics of SNI 06-3532-1994 soap requirements with a pH of 10,2 , foam power of 2,54 cm, free alkali of 0,034%, and 3,85% moisture content. Keywords : transparent soap, brown rice bran, used cooking oil, solid soap quality characteristics

scholarly journals EFFECTS OF KOH CONCENTRATION ON CHARACTERISTICS OF USED COOKING OIL LIQUID SOAP HAVING KALAMANSI CITTRUS FRAGRANCE

2017 ◽  
Vol 7 (1) ◽  
pp. 11-19
Author(s):  
Devi Silsia ◽  
Laili Susanti ◽  
Reko Apriantonedi
Keyword(s):  
Foam Height ◽  
Consumer Acceptance ◽  
Free Alkali ◽  
Alkali Content ◽  
Liquid Soap ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Randomized Design ◽  
Completely Randomized Design

Used refined cooking oil can be used to make soap. An important factor in the manufacture of soap is the saponification reaction between bases (KOH) and fatty acids. The addition of citrus essential oil to the soap preparation can increase consumer acceptance. This study aims to determine the effect of KOH concentration on the characteristics of liquid soap and to determine the proper concentration of KOH to produce good quality of liquid soap. This research uses a factorial completely randomized design with one factor that is KOH concentration, consisting of three levels ie 25%, 30% and 35%. Characteristics of liquid soap observed were viscosity, foam height, pH, and free alkali content. The results showed that the concentration of KOH effect on the characteristics of  liquid  soap  produced. If  KOH concentration increases,  viscosity,  pH and alkali-free  alkali content of the liquid soap increased. The best KOH concentration is 25%.

Analysis of the Social and Environmental Impact of Biodiesel Fuel Refined from Used Cooking Oil in Ibaraki Prefecture

2010 ◽  
Vol 40 (3) ◽  
pp. 749-762
Author(s):  
Hirokazu GOTO ◽  
Yuichi HATAYA ◽  
Yasuyuki YOKOTA ◽  
Takeshi MIZUNOYA ◽  
Yoshiro HIGANO
Keyword(s):  
Environmental Impact ◽  
Biodiesel Fuel ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
The Social ◽  
Ibaraki Prefecture

Synthesis and characterization of coal fly ash supported zinc oxide catalyst for biodiesel production using used cooking oil as feed

2021 ◽  
Vol 170 ◽  
pp. 302-314
Author(s):  
Adeyinka S. Yusuff ◽  
Aman K. Bhonsle ◽  
Jayati Trivedi ◽  
Dinesh P. Bangwal ◽  
Lok P. Singh ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Fly Ash ◽  
Oxide Catalyst ◽  
Coal Fly Ash ◽  
Biodiesel Production ◽  
Synthesis And Characterization ◽  
Cooking Oil ◽  
Used Cooking Oil

scholarly journals Two-Stage Biodiesel Synthesis from Used Cooking Oil with a High Acid Value via an Ultrasound-Assisted Method

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3703
Author(s):  
Ming-Chien Hsiao ◽  
Wei-Ting Lin ◽  
Wei-Cheng Chiu ◽  
Shuhn-Shyurng Hou
Keyword(s):  
Acid Value ◽  
Molar Ratio ◽  
Optimal Conditions ◽  
Two Stage ◽  
Cooking Oil ◽  
High Acid ◽  
Used Cooking Oil ◽  
Biodiesel Synthesis ◽  
Stage Process ◽  
Ultrasound Assisted

In this study, ultrasound was used to accelerate two-stage (esterification–transesterification) catalytic synthesis of biodiesel from used cooking oil, which originally had a high acid value (4.35 mg KOH/g). In the first stage, acid-catalyzed esterification reaction conditions were developed with a 9:1 methanol/oil molar ratio, sulfuric acid dosage at 2 wt %, and a reaction temperature of 60 °C. Under ultrasound irradiation for 40 min, the acid value was effectively decreased from 4.35 to 1.67 mg KOH/g, which was decreased to a sufficient level (<2 mg KOH/g) to avoid the saponification problem for the subsequent transesterification reaction. In the following stage, base-catalyzed transesterification reactions were carried out with a 12:1 methanol/oil molar ratio, a sodium hydroxide dosage of 1 wt %, and a reaction temperature of 65 °C. Under ultrasound-assisted transesterification for 40 min, the conversion rate of biodiesel reached 97.05%, which met the requirement of EN 14214 standard, i.e., 96.5% minimum. In order to evaluate and explore the improvement of the ultrasound-assisted two-stage (esterification–transesterification) process in shortening the reaction time, additional two-stage biodiesel synthesis experiments using the traditional mechanical stirring method under the optimal conditions were further carried out in this study. It was found that, under the same optimal conditions, using the ultrasound-assisted two-stage process, the total reaction time was significantly reduced to only 80 min, which was much shorter than the total time required by the conventional method of 140 min. It is worth noting that compared with the traditional method without ultrasound, the intensification of the ultrasound-assisted two-stage process significantly shortened the total time from 140 min to 80 min, which is a reduction of 42.9%. It was concluded that the ultrasound-assisted two-stage (esterification–transesterification) catalytic process is an effective and time-saving method for synthesizing biodiesel from used cooking oil with a high acid value.

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