PENINGKATAN PENGETAHUAN PETANI TERHADAP PERBENIHAN TANAMAN DURIAN

Carotenoids in red palm olein oil (RPOOO) have been scientifically proven to have good functional properties for the human health so that RPOOO has the potential to be used as one of the healthy drinks. One of the problems faced in the use of RPOO as a health drink is the taste and aroma is less interesting. This study aims to: 1) To obtain the ratio of ratio between RPOO and salak sidempuan extract used to obtain stable emulsion, acceptable viscosity, and acceptable RPOO with salak Sidempuan emulsion product Emulsions were prepared using 2% carbonmethylcellulosa as emulcifier and four different composition ratios of RPOO and salak extract were prepared. Emulsions characteristics and their sensory acceptability were investigated. The results of this study showed that the ratio of RPOO ratio and 1: 2 salak extract obtained the best stability with viscosity of 175 cP emulsion. In addition, emulsions with an RPOO ratio and 1:25 salak extract yield acceptable levels sensory attributes such as color, aroma and taste.

PENAMBAHAN EKSTRAK SALAK SIDEMPUAN (Salacca sumatrana) UNTUK MENINGKATKAN PENERIMAAN EMULSI MINYAK OLEIN SAWIT MERAH

Carotenoids in red palm olein oil (RPOOO) have been scientifically proven to have good functional properties for the human health so that RPOOO has the potential to be used as one of the healthy drinks. One of the problems faced in the use of RPOO as a health drink is the taste and aroma is less interesting. This study aims to obtain the ratio of RPOO and salak sidempuan extract used to obtain stable emulsion, acceptable viscosity, and acceptable emulsion product. Four emulsions were prepared using 1% carbonmethylcellulosa as emulcifier and four different composition ratios of RPOO and salak extract were prepared. Emulsions characteristics and their sensory acceptability were investigated. The results of this study showed that the ratio of RPOO ratio and 1: 2 salak extract obtained the best stability with viscosity of 175 cP emulsion. In addition, emulsions with an RPOO ratio and 1:25 salak extract yield preferable levels of sensory attributes such as color, aroma and taste.

PENENTUAN BILANGAN PEROKSIDA MINYAK RBD (REFINED BLEACHED DEODORIZED) OLEIN PT. PHPO DENGAN METODE TITRASI IODOMETRI

This study aims to determine the quality of RBD olein produced by PT. PHPO according to the peroxide number which refers to SNI 01-3741-2002. The sample used is a yellow liquid fraction obtained by fractionation of RBD palm oil or crude palm oil CPO which has undergone a refining process. The sample was analyzed using the iodometric titration method. The results of the calculation of the average peroxide number of RBD olein oil is 0.282 mg O2 / 100 g. Based on these data, Olein RBD oil meets the company quality standard and SNI 01-3741-2002.

Gas Chromatography and Fourier Transform Infrared Analysis of Biodiesel from Used and Unused Palm Olein Oil

The need for quality control of biodiesel is important to ensure the development of a clean, trouble free and safe alternative fuel technology to fossil diesel. In this work, the gas chromatography analysis of the biodiesel produced from used frying oil was carried out using PerkinElmer Clarus 500 Gas Chromatograph (GC), fitted with a capillary split injector and Fourier Infrared Detector (FID). Also, the Fourier Transform Infrared Spectroscopy was used to determine and monitor the concentration of biodiesel produced from used and unused palm olein oil. The Fourier Transform Infrared (FTIR) analysis was carried out using the FTIR Spectroscopy (FTIR 1-S Shimadzu, Japan, Model 4100) and Microlab software as well as Attenuated Total Reflectance (ATR) sample interface system. 0.5 ml of samples of the unused palm olein oil and biodiesel were taken in at the interface at a resolution of 4 cm-1 within the region of 4000 cm-1 to 400 cm-1 . The GC-MS analysis did not indicate any soap-like material, indicating that the catalyst was able to handle transesterification reaction without transition to saponification reaction. The results of the interaction between the components of the fuel samples and the radiation as a function of wavelength indicates the functional groups and the type of vibration in the fuel samples. The results obtained indicate the presence of an intense band of C=O stretching of methyl ester and O-CH3 group. It also show concentration of the five main fatty acids that are present in most biodiesel; palmitic, stearic, oleic, linoleic, and linolenic acids indicating the successful transesterification of palm olein oil to biodiesel.

Prediction of Lard in Palm Olein Oil Using Simple Linear Regression (SLR), Multiple Linear Regression (MLR), and Partial Least Squares Regression (PLSR) Based on Fourier-Transform Infrared (FTIR)

Fourier-transform infrared (FTIR) offers the advantages of rapid analysis with minimal sample preparation. FTIR in combination with multivariate approach, particularly partial least squares regression (PLSR), has been widely used for adulterant analysis. Limited study has been done to compare PLSR with other regression strategies. In this paper, we apply simple linear regression (SLR), multiple linear regression (MLR), and PLSR for prediction of lard in palm olein oil. Pure palm olein oil was adulterated with lard at different concentrations and subjected to analysis with FTIR. The marker bands distinguishing lard and palm olein oil were determined using Fisher’s weights. The marker regions were then subjected to regression analysis with the models verified based on 100 training/test sets. The prediction performance was measured based on the percentage root mean square error (%RMSE). The absorption bands at 3006 cm−1, 2852 cm−1, 1117 cm−1, 1236 cm−1, and 1159 cm−1 were identified as the marker bands. The bands at 3006 and 1117 cm−1 were found with satisfactory predictive ability, with PLSR demonstrating better prediction yielding %RMSE of 16.03 and 13.26%, respectively.