Effect of pectin on the characteristics of edible film from pink ear emperor (lethrinus lentjan) gelatin

Edible film is a thin layer used to coat food. One of the biopolymers that can be used as a base for the edible film is fish gelatin. Gelatin can be obtained from the skin of Lethrinus lentjan. However, edible film is usually brittle if only gelatin is used, so other materials, such as pectin, are needed to form an elastic film. This study aims to determine the effect of pectin addition on the characteristics of the edible film. The method used in this research was the experimental method with five treatments of pectin concentration (0%, 0.2%, 0.25%, 0.3%, 0.35%). Physical and chemical characteristics (thickness, tensile strength, elongation, water vapor transmission, and moisture content) of edible films were analyzed. The results showed that different concentrations of pectin significantly affected the characteristics of edible film. The best characteristics of edible film (0.12 mm thickness, 15.40 MPa tensile strength, 26.50% elongation, 6.99 gram/m2 24 h water vapor transmission rate, and 8.745% moisture content) were obtained as 0.2% pectin added in making the gelatin-based edible film

Dietary tuna hydrolysate modulates growth performance, immune response, intestinal morphology and resistance to Streptococcus iniae in juvenile barramundi, Lates calcarifer

This study investigated the effects of tuna hydrolysate (TH) inclusion in fishmeal (FM) based diets on the growth performance, innate immune response, intestinal health and resistance to Streptococcus iniae infection in juvenile barramundi, Lates calcarifer. Five isonitrogenous and isoenergetic experimental diets were prepared with TH, replacing FM at levels of 0% (control) 5%, 10%, 15% and 20%, and fed fish to apparent satiation three times daily for 8 weeks. The results showed that fish fed diets containing 5% and 10% TH had significantly higher final body weight and specific growth rate than the control. A significant reduction in blood glucose was found in fish fed 10%, 15% and 20% TH compared to those in the control whereas none of the other measured blood and serum indices were influenced by TH inclusion. Histological observation revealed a significant enhancement in goblet cell numbers in distal intestine of fish fed 5 to 10% TH in the diet. Moreover, fish fed 10% TH exhibited the highest resistance against Streptococcus iniae infection during a bacterial challenge trial. These findings therefore demonstrate that the replacement of 5 to 10% FM with TH improves growth, immune response, intestinal health and disease resistance in juvenile barramundi

Properties of high-quality hydrolysate prepared from mudskipper (Periophthalmus freycinetii)

Abstract Mudskipper (Periophthalmus freycinetii), an amphibious fish, lives in tidal areas and is known for its ability to climb, walk and skip about out of water. It contains high protein and taurine and exhibit unique adaptation to extreme environment. Despite its potential, mudskipper is still underutilized. The aim of this research was to examine the biochemical properties and antioxidant activity of mudskipper hydrolysate. The mudskipper was hydrolyzed using endogenous enzymes under different pH (control, 5, 7, 9) and hydrolysis duration (12 and 24 hours). Hydrolysates were characterized with respect to ash, moisture, fat and protein content as well as the yield and amino acid composition. Antioxidant activity of mudskipper hydrolysate was tested using DPPH. pH 9 and 24h hydrolysis duration gave the highest yields (80.48%), degree of hydrolysis (DH) (37.22%) and protein content (52.63%). High antioxidant activity (56.12%) was also observed. The molecular weight of hydrolysate ranged from 12.55 – 117.73kDa. The hydrolysate contained 35.31% essential amino acid and 63.63% non-essential amino acids which may relate to its functional and bioactive properties. The results suggested that underutilized fish has potency as source of high-quality hydrolysate.</jats:p

The application of modular architecture on apartment buildings

Abstract Housing crisis become one of the world problems, where many people cannot afford a decent shelter. This problem is mostly experienced by young people, where young people have a middle-level income, so they feel it difficult to get suitable housing for them and their needs. Research using descriptive methods with literature study approach. The study is aimed to provide affordable housing for young people with developing financial condition. The aspect to be considered is about how the application and method of modular architecture can provide affordable housing for young people in the form of vertical housing or apartment. This study will discuss about a comparison between modular and conventional construction and the impact of applying modular architecture to apartments to produce affordable apartment units. The results of this study discuss about how the influence of modular architecture to provide an affordable apartment.</jats:p

Physical Quality of Creative Economic Space on Cultural Tourism Areas in Java Island

Abstract Java is an island with the most populous population in Indonesia. With the potential of cultural diversity in Java, creative economic activities on this island need the development. The local wisdom and cultural events are reflecting the creativity of the community and can provide economic value to the community. The physical quality of creative economic spaces that can become generators in some cultural tourism areas does not have functional quality space. To support the preservation of cultural heritage and the development of superior cultural tourism areas, the quality of an excellent creative economic space is necessary. The aim of this study is to identify physical quality of space for creative economic activities or events. The method of this study used a qualitative descriptive method. Results of this study provide an overview that cultural village in Semarang and Banyuwangi have five potential creative economic activities: traditional architecture, culinary, crafts, music, and performing arts. The physical quality of these two creative economic spaces is still limited because of the limited economic capacity of the community in providing the spaces. They are shaping and realizing space with utilizes natural conditions (green open spaces or spaces among tall trees) and local material (bamboo).</jats:p

A study of coworking space and its facilities in Jakarta, Indonesia

Abstract Many startups in Jakarta that require coworking space for their companies can be expend. Coworking space is a shared office that is used by many types of professionals. This study aims to analyze the types of spatial layouts in the coworking space in South Jakarta. Data analysis was done by using study literature and study comparative with the same coworking space. The results of the study are the concept of planning and designing a coworking space in South Jakarta.</jats:p