AbstrakJahe merah merupakan komoditi yang mempunyai harga tinggi karena merupakan bahan dasar dalam pembuatan obat tradisional. Jahe merah dengan nama latin Zingiber officinale Roxb. memiliki banyak khasiat, jika dipasarkan dalam bentuk olahan memiliki nilai jual yang lebih tinggi. Jahe merah instan adalah salah satu sediaan minuman yang dapat secara langsung dikonsumsi. Peluang bisnis produksi jahe merah instan sangat bagus, karena jahe merah instan baik untuk dikonsumsi dengan maksud pencegahan bahkan pengobatan berbagai penyakit. Pelatihan pembuatan jahe merah instan dilakukan pada Mitra Rezeki Jaya di Kelurahan Binjai Kecamatan Medan Denai. Pelatihan tetang pembuatan Jahe Merah instan meliputi pengolahan jahe merah sehingga menjadi bentuk bubuk, pengemasan dan pemasarannya. Produk Jahe Merah instan yang dihasilkan dipasarkan dengan berbagai cara diantaranya dipasarkan pada Warung, Toko Grosir dan konsumen secara langsung. AbstractRed Ginger is a commodity that has a high price because it is a basic ingredient in the manufacture of traditional medicine. Red Ginger Latin name Zingiber officinale Roxb. has many benefits, if they are marketed in the form of processed have a higher resale value. Instant red ginger is one of the beverage preparation can be directly consumed. Business Opportunities instant production of red ginger is excellent as an instant red ginger good for consumption for the purpose of prevention and even treatment of various diseases.Instant red ginger-making training conducted at Partners Village Sustenance Binjai subdistrict of Medan Denai. Training neighbor manufacture Red Ginger instant includes red ginger processing so as to form a powder, packaging and marketing. Red Ginger instant product produced is marketed in various ways including marketed in point, grocery stores and consumers directly.

The effect of particle size of fresh turmeric and simplicia toward content of curcumin compounds has been carried out. The purpose of this research is to analyze the content of curcumin compounds based on the particle size of the fresh turmeric and simplicia using ethanol and water solvents. Extraction of curcumin in fresh turmeric and simplicia yield was carried out by maceration method of electrosynthetic coupling in etanol and water solvent using the infundation method, at particle sizes of 20, 80 and 140 mesh. The content of curcumin compound was analyzed as quantitatively using spectrophotometry visible at 475 nm, the linier regression is Y = 6.428x-4.424 and R2 = 0.7594. The highest content of curcumin compound was found in the fresh turmeric and simplicia using ethanol solvent at 140 mesh particle size respectively, are 5.6 and 4.2 ppm. In water solvents, the concentration of curcumin from fresh turmeric and simplicia were 1.3 and 0.6 ppm, respectively.

Chitosan is a modification of chitin compounds that are widely found in the outer skin of crustacean animals such as shrimp and crabs. This research includes isolation of chitin and chitosan: deproteination, demineralization, depigmentation and deacetylation namely transformation of chitin into chitosan, characterization of chitosan, FTIR, and chitosan toxicity test with five concentrations of test solution, namely 100 g/ml, 250 g/ml, 500 g/ml, 750 g/ml and 1000 g/ml using the BSLT method by looking at the number of deaths of Artemia salina L larvae (LC50). The results of tiger prawn shell chitosan (Penaeus monodon) obtained the % degree of deacetylation of 60%. The results of the toxicity test showed that chitosan was not toxic to Artemia salina Leach, indicated by the LC50 value > 1000µg/ml. chitosan windu 4994.16 g/ml, chitosan is not toxic

Gaharu (Aquilaria malaccensis Lam.) is one of the natural ingredients that can be used as an antioxidant. Antioxidants are compounds that can inhibit free radical reactions in the body. Free radicals have an impact on the pathogenesis of several diseases in humans due to oxidative stress in cells. The purpose of this study was to determine the class of secondary metabolites of agarwood bark and antioxidant activity and to compare the value of IC50 (Inhibitory concentrations) of the methanol extract of agarwood bark with the IC50 of vitamin C in the DPPH method using UV-Vis spectrophotometry. The methanol extract of agarwood bark was macerated using methanol, then determined the content of secondary metabolites of Simplicia. The determination of antioxidant activity was carried out on the methanol extract of agarwood bark with the addition of DPPH at various concentrations. The sample concentrations were 20, 40, 60, 80, and 100 µg/mL.. As a comparison, vitamin C was used with concentrations of 4, 8, 12, 16 and 20 µg/mL.. Then they calculated percent attenuation (% inhibition) and the value of IC50. The results of the screening on the methanol extract of agarwood bark contained chemical compounds such as flavonoids, saponins, and tannins. The determination of antioxidant activity was carried out using a UV-Vis spectrophotometer with the DDPH method. The results were obtained from the methanol extract of the bark of agarwood, which has antioxidant activity in the strong category with an IC50 value of 94.59 µg/mL.and vitamin C in the very strong category with an IC50 value of 22,11 µg/mL.

The chayote (Sechium edule (Jacq.) Swartz) is thought to have excellent antioxidant activity. Fresh chayote has been used empirically by the public as an antihypertensive and to reduce cholesterol levels. This is because chayote contains several vitamins including vitamin A, B, C, and several secondary metabolites. The antioxidant activity found in chayote can prevent the oxidation of a molecule thus stopping the free radical chain reaction and maintaining the working system in the body. This study aims to determine what secondary metabolites are contained in the ethanol extract of chayote and to determine their antioxidant activity. The chayote used is young and old. The research stages were extraction by maceration method, phytochemical screening, determination of functional groups using the FT-IR method, and testing for antioxidant activity using the DPPH method (1,1-diphenyl-2-picrylhydrazyl). The results of the phytochemical screening of the chayote’s ethanol extract contained chemical compounds of the alkaloids, flavonoids, saponins, tannins, and glycosides. The FT-IR results of the chayote extract showed the presence of functional groups O-H, C-H, C-N, C = C, C≡C, and C-O. The results of the examination of antioxidant activity using the DPPH method for the ethanol extract of young and old chayote fruit obtained IC50 values of 1281.1 and 847.5 µg/ml.