Phytochemical and Antioxidant Capacity Test on Turmeric Extract (Curcuma Longa) Traditionally Processed in Bali

Purpose: The purpose of this study was to determine the ways and objectives of the use of turmeric by Balinese, as well as the phytochemical content and antioxidant capacity of turmeric extract which is traditionally processed in Bali. Research methods: The method and purpose of utilizing turmeric were obtained through observation and interviews with 900 Balinese respondents. Quantitative phytochemical tests include starch, protein, flavonoid, tannin, phenol and vitamin C levels and qualitatively for the presence of triterpenes, steroids, alkaloids, and saponins. Antioxidant capacity was measured using the DPPH method. Findings: Through this research, we found there were only 36.8% of respondents had ever used turmeric as a traditional medicine. Utilization of turmeric was mostly in the form of loloh or traditional drinks. Phytochemical test results showed turmeric extract had 67.38% starch, 3.42% protein, 2709.39 mg/100 gr flavonoids, tannins 291.64 mg/100gr, phenol 1584.04 mg/100 gr, and vitamin C 0.06 mg/100gr. Qualitatively, turmeric extract contained triterpenes, alkaloids, and saponins, but did not contain steroids. The antioxidant capacity of turmeric extract was 70.9 mg/L GAEAC. Implications: Turmeric extract is a traditional medicine made from nature that is most commonly used by Balinese and very potential to be developed as an antibacterial, antioxidant, anti-inflammatory, or other benefits that still need further investigation

Synthesis of Sodalite from Indonesian Kaolin with Conventional and Alkali Fusion Method

Sodalite has been synthesized from Indonesian kaolin. Kaolin was converted into more reactive metakaolin using conventional and alkali fusion methods. In the conventional method, kaolin is calcined at a temperature of 700 oC for 3 hours. Meanwhile, in the alkali fusion method, the mixture of kaolin and NaOH was calcined at a temperature of 600 oC for 2 hours. The effect of synthesis parameters such as aging time and crystallization temperature was investigated in conventional methods. Besides that, the crystallization time was investigated in the alkali fusion method. Transformation of kaolin into metakaolin and synthetic products was characterized using X-ray diffraction (XRD), X-ray Fluorescence (XRF), Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). The results showed that the kaolin structure contained a lot of quartz. In the conventional method, the kaolin structure cannot be converted into metakaolin. The synthesis product obtained from this method is a mixture of sodalite and quartz. Whereas, in the alkali fusion method, kaolin can be converted into metakaolin and sodium silicate. The synthesis product obtained is a pure sodalite

Pengembangan Motif Fraktal pada Usaha Produksi Kain Jumputan Palembang

Kain jumputan adalah salah satu kain khas Palembang. Kain jumputan Palembang memiliki ciri dan kekhasan tersendiri baik dari sisi warna maupun motif. Motif kain jumputan Palembang adalah pengulangan dari suatu bentuk bangun yang digambarkan secara berulang pada lembaran kain. Konsep pengulangan motif pada kain jumputan bersesuaian dengan konsep bangun fraktal. Penerapan teknologi komputer dan konsep matematika pada rancangan motif kain jumputan diharapkan dapat menghasilkan variasi motif kain jumputan yang dapat meningkatkan penjualan kain jumputan Palembang. Dari kegiatan pengabdian ini, dihasilkan kain dengan motif fraktal lupis dan titik tujuh. Kedua motif fraktal digambar menggunakan bangun fraktal himpunan Julia dan kurva Sierspinski Kata Kunci:  Fraktal, Jumputan Palembang, Himpunan Julia, Kurva Sierspinsk