Dian Herawati

Critical roasting level determines bioactive content and antioxidant activity of Robusta coffee beans

Indonesian Lampung Robusta coffee green beans were roasted at eight roasting levels (green bean, early yellow, brown, 1st crack done, very light, light, medium, and dark), followed by grinding and brewing. The physical properties of ground coffee and chemical properties of brewed coffee were analyzed. The resulting data were mapped in order to investigate the critical roasting level. It was observed that major alterations for physicochemical properties of coffee happened after “first crack” roasting level (when water activity (Aw) of bean decreased from 0.22 to 0.15). This cracking is defined as popping sound of the bean during roasting. Continuous formation of melanoidins under low Aw (< 0.15) was followed by slow degradation of chlorogenic acid (5-CQA) and total phenolic compounds. Caffeine was stable during roasting, while antioxidant activity slightly decreased. The “first crack” was determined to be the critical roasting level to produce roasted coffee beans containing high concentrations of phenolics.

Peningkatan Kualitas dan Diversifikasi Produk Ikan Teri untuk Pemberdayaan Masyarakat di Desa Saramaake, Halmahera Timur

Saramaake Village is one of the villages in East Halmahera District known as anchovy ( Stolephorus spp) catching area. In this area, production of the anchovy is high and various in size. A community empowerment had been done for 7 months, from June 2016–January 2017, aimed to improve the anchovy product quality and product diversification. Methods used in this activity were training and mentoring. Targets of the activity were fishermen (15 fisherman groups or 60 persons; for fish catch product handling), and fisherman’s wife (2 groups or 11 persons; for product diversification). The activities that had been carried out were product quality improvement (fish drying construction, fish storage room rehabilitation), added value improvement (product diversification), packaging and labelling of the product. Based on the observation, the community had gained a knowledge and technology related to the fish handling and processing. Some communities had applied the technology of manufacturing processed products, as well as doing the packaging and labeling of these products.