This study aims to determine the effect of the type of solvent on extract yield, total phenolics and IC50 values of the skin of red dragon fruit and also obtain the best type of solvent that provides extract rendement, total phenolics and the highest or best IC50 value for extracting red dragon fruit peels. There are 3 types of solvents used (95% ethanol, ethyl acetate and acetone: water (7: 3) with a sample-solvent ratio (5:1 v/b). The data obtained were analyzed using a Completely Randomized Design that was applied to observations of extract rendemen, phenolics total and IC50 values, if the treatment had a very significant or significant effect followed by continued BNJ test at 1% or 5% level. The results showed that the solvent ratio very significantly affected the extract rendemen, phenolics total and IC50 value of red dragon fruit peel extract. Ethanol 95% solvent is the best solvent for extracting dragon fruit peels because it has the highest yield (26.15%), total phenolic (64.75 ppm) and antioxidant activity (IC50 value) (120.53 ppm) highest or best. Keywords : IC50, the red dragon fruit skin, solvent ratio, extract yield, phenolics total
This study aims to determine the effect of the ratio of solvents to extract yield, phenolics total and IC50 values of red dragon fruit peel and also get the optimal solvent ratio to obtain extract yield, phenolics total and the highest or best IC50 values of red dragon fruit peel extracts. The solvent ratio used there are 6 levels of the ratio: 2:1; 3:1; 4:1; 5:1; 6:1 and 7:1 (v/w). The data obtained were analyzed using a Completely Randomized Design that was applied to observations of extract yield, phenolics total and IC50 values, if the treatment had a very significant or significant effect followed by continued Tukey HSD test at 1% or 5% level. The results showed that the solvent ratio very significantly affected the extract yield, phenolics total and IC50 value of red dragon fruit peel extract. The solvent ratio of 4:1 (v/w) produced extract yield, phenolics total and IC50 values the highest or best i.e 26.22%, 71.56 ppm, and 124.62 ppm. Keywords : IC50, the red dragon fruit skin, solvent ratio, phenolics total
Tomat sebagai komoditas hortikultura memiliki sifat yang mudah rusak. Penanganan yang tidak tepat pada buah tomat sebelum, selama dan sesudah pemanenan dapat mempercepat proses kerusakan sehingga mengakibatkan penurunan mutu, yang selanjutnya mempengaruhi nilai gizi dan nilai ekonomisnya. Hal ini juga berpengaruh terhadap konsumen yang menginginkan tingkat kesegaran buah tomat. Oleh karena itu sangat penting untuk memperhatikan mutu produk dengan cara perlakuan suhu dan lama penyimpanan. Tujuan penelitian ini untuk menentukan jenis bahan pengemas terbaik yang dikombinasikan dengan perlakuan suhu dan lama penyimpanan pada tomat. Penelitian ini dilaksanakan di Laboratorium FMIPA Universitas Tadulako. Waktu penelitian dari Bulan Juni sampai Agustus 2020. Penelitian ini menggunakan Rancangan Acak Lengkap dengan dua faktor. Faktor pertama yaitu suhu dengan 2 taraf yaitu suhu ruang (30 ℃) dan suhu refrigerator (5 ℃) dan faktor kedua yaitu lama penyimpanan dengan 2 taraf yaitu 5 hari dan 10 hari, yang diulang sebanyak tiga kali ulangan sehingga terdapat 12 unit percobaan. Hasil penelitian menunjukkan bahwa perlakuan suhu dan lama penyimpanan tidak berpengaruh terhadap susut buah tomat dan tidak terdapat interaksi antara perlakuan suhu dan lama penyimpanan terhadap susut bobot buah tomat. Jenis bahan pengemas, suhu dan lama penyimpanan memberikan hasil kadar air buah tomat yang berbeda. Semakin lama penyimpanan maka semakin tinggi kadar vitamin C buah tomat dan bahan pengemas plastik PP memberikan hasil kadar vitamin C yang lebih tinggi. Begitupun kadar likopen semakin lama waktu penyimpanan maka kadar likopen pada buah tomat akan semakin meningkat.
<p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>This artistic research is conducted to explore face and body painting techniques. Its application to the model in fashion batik fashion show. Face painting is a painting that only uses the face as a medium (the field to be painted), while the body painting medium is the whole body from the neck to the feet. The creation process model refers to contemporary art in which art barriers are not limited to a combination of face and body painting, batik fashion art wear, dance art and music art, which is packaged in the form of a fashion show. Kind of batik fashion art wear is selected batik carnival fashion, glamorous batik fashion, Fashion Batik Klasic and fashion batik casual. The four forms of fashion batik is chosen because it is often displayed in the event of a major fashion show in the city of Solo.</em><strong><em></em></strong></p><p><em>Creation methods include Exploration (Observation, exploration of objects and the subject of creation), Improvisation (Experiments to make sketches of face design and body painting), Embodiments (creation of works and Fashion show performances). Creation of the work of face and body painting is expected to be able to produce artwork face and body painting the right model used in batik fashion art wear fashion, and able to add artistic batik fashion art fashion wear.</em><strong><em></em></strong></p><p><strong><em> </em></strong></p><p><em>Keywords: Face painting, body painting, fashion, batik, artistic, art wear.</em><em></em></p>
The Covid-19 virus is still spreading throughout the world. In fact, many are worried about being exposed to this virus, especially the elderly. Anxious feelings due to excessive Covid-19 will lower his immunity. Over time, this anxiety disorder can get worse and interfere with the sufferer's quality of life, therefore anxiety needs to be managed. One way to deal with anxiety is through art therapy.Art therapy used in this study is through drawing and fruit creation, where the media used for art therapy is in accordance with the one chosen by the participants. This study used a qualitative analysis based on: Self Report (Interview and Anxiety Scale using the measurement of anxiety levels using the TMAS (Taylor Manifest Anxiety Scale) instrument compiled and developed by Tylor, given three times, namely (pretest, posttest and follow up). Ratiing By other, and Observation (Re-checting). The results of this study indicate a change in anxiety levels before and after the intervention. Evidence obtained from the four participants shows a change in the total value of anxiety. Thus, art therapy has been shown to reduce anxiety in the elderly due to the Covid-19 pandemicKeywords: Art therapy, Anxiety Disorders and Covid-19
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