Application of Functional Colorant Prepared from Black Rice Bran in Yogurt

AbstractFood color becomes a significant part of food products; not only for its appearance but also its attractive consumer acceptability. Black waxy rice is one of the most potential plant sources of dark purple color of anthocyanins. Therefore, the present study was conducted to prepare the functional food colorant from the black rice bran. The flavored yogurt was chosen in this study due to its low pH favors the bright color of anthocyanins. The colorant powder, obtained from this work, was dark purple in color and contained γ-oryzanol, total phenolic, and anthocyanins with the amount of 18.14mg/g, 37.10mg/g, and 9.48mg/g, respectively. The colorant powder was indicated the successful application to yogurt. Yogurt added with colorant powder of 0.6% w/w presented a pleasant purplish-pink color (L = 68.41, C = 15.23). The chroma and lightness of yogurt were constant throughout 21 days under refrigeration storage (4°C)

Study of Physical and Chemical Resistance of Elastomers in Aqueous MEA and MEA+CO2 Solutions during the Carbon Dioxide Absorption Process

AbstractA study was conducted to evaluate the resistance of raw EPDM, natural rubber (NR), isobutylene isoprene rubber (IIR) and styrene butadiene rubber (SBR) to amines in terms of mass and chemical changes in an amine-based CO2 capture environment made up of aqueous solutions of 3–7M MEA with 0–0.5mol CO2/mol MEA. The test for each condition lasted for 30 days at 40°C. The results showed that SBR and NR had poor chemical resistance leading to formation of amides on their surfaces and resulting in high mass change. In contrast, EPDM and IIR had insignificant mass and chemical structure changes. The performance of commercial EPDM and IIR were then further studied and compared against PTFE, using aqueous 5M MEA and with 0.5mol CO2/mol MEA at 40 and 120°C each for 30 days. Resistance was measured in terms of mass, hardness, and tensile strength changes. The results showed that PTFE was compatible with the solution at both temperatures. For EPDM and IIR at 40°C, the changes in mass, hardness, and tensile strength were negligible while at 120°C, these changes were very significant. The implication is that PTFE can be used in any part of the process while EPDM and IIR can only be used in low-temperature sections

Adaptation of Collaborative Learning and Synectics Learning System for the Development of a Virtual Classroom for Educational College Creative Thinking at Roi Et Rajabhat University

This research is aimed at Developing a virtual classroom model using shared learning and syntactic learning To develop creativity of the College of Education students Roi Et Rajabhat University by researching and developing 3 steps of research: 1) Create a virtual classroom style using shared learning and Synthetics learning to develop creativity of the College of Education students Roi Et Rajabhat University. 2) Study the results of using the virtual classroom format by using joint learning and synthetics learning to develop the creativity of the College of Education students Roi Et Rajabhat University. 3) Presenting a virtual classroom using shared learning and Synthetics learning to develop the creativity of the College of Education students Roi Et Rajabhat University. The sample group consists of undergraduate students, Bachelor of Education Program Roi Et Rajabhat University Early Childhood Education Select by group sampling method (Cluster Sampling) The experimental group consisted of 30 students studying with a virtual classroom model using common learning and Synthetics learning to develop the creativity of the College of Education students Roi Et Rajabhat University with a control group of 32 people, normal students, statistics used to analyze data such as frequency, percentage, mean, standard deviation Non-independent test statistics and independent test statistics and statistics for testing the relationship by value Pearson's correlation coefficient. Upon completion of the comparative study of achievement and study the satisfaction of students towards learning in a virtual classroom model Data analysis using mean, standard deviation T-test, the research found that; 1. Virtual classrooms using collaborative learning and synthetics to develop the creativity of the College of Education students Roi Et Rajabhat University is comprised of 6 components, namely 1) Learning system on virtual classroom 2) Communication and collaboration tools 3) Media content and learning resources 4) Student and instructor roles 5) Large group and sub-group 6) Learning Evaluation for the learning process together with 3 steps: 1) Process before class 2) Procedure during study consists of sub steps, which are 2.1) preparation for learners 2.2) classes consist of activities in large groups; stimulation and pulling ideas to create motivation, telling purpose, review previous knowledge, learn and present lessons, set the topic of the work by voting, point out learning methods and join activities in small groups (Activities in small groups set topics by voting, prepare and seek information, brainstorming, create works presenting work within a small group, comment vote to vote in large group showing comments, votes, votes and 3) evaluation 3 to 5 qualified persons assessed to certify the virtual classroom format by using mutual learning and learning of synthetics teaching to develop the creativity of higher education students in the field of education, education, science and related fields. There is a comment on the model developed by agreeing the most