ANTHOCYANIN EXTRACTION OF RED DRAGON FRUIT PEELS (Hylocereus polyrhizus) USING MACERATION METHOD

Anthocyanins present in the red dragon fruit peel (Hylocereus polyrhizus) can be used as natural dyes. An extraction procedure can be used to acquire anthocyanins. The maceration method was used to isolate anthocyanin dyes in this analysis. The aim of this study was to see how the solvent ratio affected the total anthocyanin content in the skin of red dragon fruit. This research used laboratory experimental method using descriptive analysis. The solvent ratios used were (1:30, 1:40, 1:50 and 1:60) with a mixture of distilled water with 10% citric acid as the solvent. Parameters observed were total yield, pH, residual solvent content, spesific gravity and total anthocyanin content. The best treatment was found to be red dragon fruit peel with a solvent ratio of 1:30, which produced the highest total anthocyanin content of 4.73 mg/L. This treatment resulted total yield 7.40%, residual solvent content 0.05%, spesific gravity 1.30, and pH 1.05, respectively. It was proven that the more solvent added could linearly decrease the effectiveness of anthocyanin extraction of dragon fruit peel extracts.

CONTRIBUTION OF MOTION STUDY TO STANDARD TIME AT BALL TEA STATION (CASE STUDY PT. MITRA KERINCI, SOUTH SOLOK)

PT Mitra Kerinci is a company established in West Sumatra Province which is engaged in tea plantations and tea processing in its factories. PT Mitra Kerinci produces an average of 7,000 kg or 7 tons of green tea shoots per day. The production process for processing tea shoots, the factory sometimes does not reach the production target in accordance with the production target of the company. The goal of research to determine the amount of the contribution of the motion study to the standard time and determine the amount of the contribution of the standard time to the increase in productivity in the final drying process at Ball Tea station, the production of tea shoots at PT. Kerinci Partners. This research an experimental research type and uses the same subject research design (treatment by subject design), namely the treatment is imposed on the same subject. The results of time calculations after the motion study on the process flow map reached 15,676.02 seconds. Then proceed with the calculation of the cycle time which reaches 825.41 seconds with the actual standard deviation obtained at 3.58 and the standard deviation of the subgroup distribution is 1.79. After knowing the results of the average cycle time, the actual standard deviation and the standard deviation of the subgroup distribution, the data uniformity test was continued, starting with calculating the BKA and BKB. The BKA calculation results obtained 830.78 and the BKB reached 820.04. So that in the data uniformity test the results reached 0.908. In the series of movements of the left and right hands after the repair, a cycle time of 825.41 seconds / unit of Ball Tea was obtained from the previous time, reaching 906.66 units / Ball Tea and getting a time difference of 81.25 seconds. In the calculation of the standard time, the normal time calculation is carried out first, after it is known that the result of the adjustment calculation reaches 1.12 so that the normal time is obtained with a total of 924.45 seconds. Continue to calculate the standard time and the results reach 1423.65 seconds with an allowance of 54%. This contributed to an increase in productivity by 5.7%.

EVALUASI SIFAT KIMIA DAN SENSORI PERMEN JELLY JAMUR TIRAM PUTIH PADA BERBAGAI KONSENTRASI GELATIN

The purpose of the research to determine the concentration of gelatin that produce white oyster mushroom jelly candy which appropriate with the chemical and sensory characteristic of standard ISO 3547.2-2008. The research arranged in a Complete Randomized Block Design (CRBD) by a single factor that is gelatin concertration on six grade of 5%, 10%, 15%, 20%, 25%, and 30% with four repetition. Data analysis of variance and a further test with the Least Significant Difference (LSD) at 5% level. The results showed that the best treatment was found in 20% of gelatin concentration that produces flavor white oyster mushroom jelly candy with score of 2.98 (rather typical white oyster mushroom), elasticity with a score of 3.89 (chewy), color with score of 3.71 (like), the overall acceptance with score of 3.83 (like), the water content of 18.27% (bb), ash content of 0.25% (bb), reduced sugar levels of 0.28% (bb), and sucrose levels of 51.33% (bb) which appropriate with SNI jelly candy 3547.2-2008.

PENENTUAN TINGKAT KESEGARAN DAGING AYAM MENGGUNAKAN LABEL PINTAR BERBASIS EKSTRAK ANTOSIANIN UBI JALAR UNGU

Daging ayam merupakan bahan pangan yang bersifat mudah rusak dan memiliki umur simpan yang pendek. Dewasa ini, telah muncul kemasan pintar (Smart packaging) yang dilengkapi label pintar. Label pintar berbasis ekstrak antosianin ubi jalar ungu dirasa dapat menjadi solusi yang tepat untuk digunakan sebagai penentu tingkat kesegaran daging ayam. Tujuan penelitian ini adalah mengetahui pengembangan prototype label pintar ekstrak antosianin ubi jalar ungu dan kelayakannya untuk menentukan tingkat kesegaran daging ayam. Esktrak ubi jalar ungu diperoleh dengan metode maserasi menggunakan pelarut metanol 96% yang diasamkan HCl 1%. Hasil ekstrak antosianin memiliki pH sebesar 5.58 ± 0.013 dan nilai kadar antosianin sebesar 62.79 ± 0.558 mg/100 g. Label pintar menunjukkan tingkat kesegaran daging ayam dengan adanya perubahan warna, dimana warna ungu muda menandakan daging ayam segar, warna ungu pudar menandakan bahwa daging ayam masih segar, dan label pintar warna ungu kebiru-biruan menandakan daging ayam pada kondisi tidak segar. Hasil kelayakan label pintar pada stabilitas pH mengalami perubahan warna baik pada suasana asam dan suasana basa, tetapi lebih stabil pada suasana asam.