- Gold nanoparticles (AuNP) capped by L-arginine have been synthesized. In this paper, we report the stability of nanoparticles observed for six weeks. In this study, gold nanoparticles were synthesized by reducing Au(III) to Au(0) using trisodium citrate and capping agent L-arginine as a stabilizer. The parameters of this study are the pH of the medium (5 and 10) and the concentration of-arginine (1, 2, and 5 mM). The stability of gold nanoparticles was studied from the position of the maximum wavelength intensity of the full-width half-maximum absorption from the surface plasmon resonance spectra measured by UV-vis spectrophotometer. The results showed that gold nanoparticles were successfully synthesized by the appearance of a ruby red solution. The spectra of surface plasmon resonance AuNP-arg pH 10 shows sharper than pH 5. Gold nanoparticles (AuNP) can be stabilized using L-arginine at concentrations of 1-2.5 mM under pH 10. AuNP stabilized amino acid L-arginine was shown for a period of six weeks through the study of position changes of λ max , peak intensity and a full-width half-maximum of surface resonance plasmon spectra. These results prove that AuNP-arg can be used in commercial applications, as sensors or in the medical and cosmetic fields.
{"title":"Study of Surface Plasmon Resonance of Gold Nanoparticles Stabilized by L-arginine","authors":"Amaria Amaria, D. K. Maharani, M. M. Sianita","doi":"10.2991/snk-19.2019.24","DOIUrl":"https://doi.org/10.2991/snk-19.2019.24","url":null,"abstract":"- Gold nanoparticles (AuNP) capped by L-arginine have been synthesized. In this paper, we report the stability of nanoparticles observed for six weeks. In this study, gold nanoparticles were synthesized by reducing Au(III) to Au(0) using trisodium citrate and capping agent L-arginine as a stabilizer. The parameters of this study are the pH of the medium (5 and 10) and the concentration of-arginine (1, 2, and 5 mM). The stability of gold nanoparticles was studied from the position of the maximum wavelength intensity of the full-width half-maximum absorption from the surface plasmon resonance spectra measured by UV-vis spectrophotometer. The results showed that gold nanoparticles were successfully synthesized by the appearance of a ruby red solution. The spectra of surface plasmon resonance AuNP-arg pH 10 shows sharper than pH 5. Gold nanoparticles (AuNP) can be stabilized using L-arginine at concentrations of 1-2.5 mM under pH 10. AuNP stabilized amino acid L-arginine was shown for a period of six weeks through the study of position changes of λ max , peak intensity and a full-width half-maximum of surface resonance plasmon spectra. These results prove that AuNP-arg can be used in commercial applications, as sensors or in the medical and cosmetic fields.","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128351361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study evaluated the effect of preparation conditions (curing) and extraction time on the yield and quality (water and ash content, gel, and colour) of type B gelatin from goat bone. In general, the yield of goat's gelatin (GBG) increases with increasing curing (10-50 days) and extraction time (4-5 hours). Under the same conditions, a decrease in water content, gel strength and brightness were detected on GBG. Specifically, lower ash content was produced from 50 days curing and 5 hours extraction compared to other conditions. In line with this, lower water content, gel strength and brightness were also observed in this condition. However, by referring to the GMIA, the highest quality GBG is obtained from the manufacturing process using a 30-day curing time and 5-hour extraction time. Keywords—Gelatin, halal, goat, bone, curing, extraction
{"title":"The Effect of Curing and Extraction Time against Yield and Quality of Type B Gelatin from Goat Bone","authors":"A. Bahar, R. Rusijono, N. Kusumawati","doi":"10.2991/snk-19.2019.2","DOIUrl":"https://doi.org/10.2991/snk-19.2019.2","url":null,"abstract":"In this study evaluated the effect of preparation conditions (curing) and extraction time on the yield and quality (water and ash content, gel, and colour) of type B gelatin from goat bone. In general, the yield of goat's gelatin (GBG) increases with increasing curing (10-50 days) and extraction time (4-5 hours). Under the same conditions, a decrease in water content, gel strength and brightness were detected on GBG. Specifically, lower ash content was produced from 50 days curing and 5 hours extraction compared to other conditions. In line with this, lower water content, gel strength and brightness were also observed in this condition. However, by referring to the GMIA, the highest quality GBG is obtained from the manufacturing process using a 30-day curing time and 5-hour extraction time. Keywords—Gelatin, halal, goat, bone, curing, extraction","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130035271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The use of natural dyes for batik has some advantages because it produces a unique exotic color with exclusive imaging and is environmentally friendly due to the waste easily degraded. The purpose of this research was to obtain textile dye extract from brazilwood (Caesalpiniasappan L) and water guava (Syzygiumaqueum)leaves with various compotitions and fixer, i.e., alum, calcium carbonate and ferrous sulphate. The mordant used is alum and soda ash (Na2CO3). The highest color intensity (87.63%)was obtained from brazilwood/water guava leavesratio 50/50 and ferrous sulphate fixer, while the lowest (35.60%) from ratio 25/75 and calcium carbonate fixer. Keywords—Natural dyes, Caesalpiniasappan L, Syzygiumaqueum, fixer, color intensity
{"title":"Extraction and Application of Natural Dyes from Brazilwood and Water guava leaves","authors":"N. Kusumawati, Samik Samik, S. Muslim","doi":"10.2991/snk-19.2019.10","DOIUrl":"https://doi.org/10.2991/snk-19.2019.10","url":null,"abstract":"The use of natural dyes for batik has some advantages because it produces a unique exotic color with exclusive imaging and is environmentally friendly due to the waste easily degraded. The purpose of this research was to obtain textile dye extract from brazilwood (Caesalpiniasappan L) and water guava (Syzygiumaqueum)leaves with various compotitions and fixer, i.e., alum, calcium carbonate and ferrous sulphate. The mordant used is alum and soda ash (Na2CO3). The highest color intensity (87.63%)was obtained from brazilwood/water guava leavesratio 50/50 and ferrous sulphate fixer, while the lowest (35.60%) from ratio 25/75 and calcium carbonate fixer. Keywords—Natural dyes, Caesalpiniasappan L, Syzygiumaqueum, fixer, color intensity","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124468993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research was conducted to determine the activity of ellagic acid compounds as anti-breast cancer. The research was carried out through Molecular Docking in silico with several stages such as optimization of the structure of 3D ellagic acid compounds and docking between optimized ellagic acid compounds and NUDT5 protein. Molecular docking is done using the software of Autodock Tools 1.5.6 and Discovery Studio 2016. The results showed that ellagic acid has the potential as an anti-breast cancer compound based on its binding energy to the NUDT5 protein of -3.98 kcal/mol and an inhibitor constant of 1.21 mM. Keywords—ellagic acid, molecular docking, NUDT5, binding energy, inhibitors constant
本研究旨在确定鞣花酸化合物的抗乳腺癌活性。本研究通过分子对接(Molecular Docking in silico)的方式进行，包括对三维鞣花酸化合物进行结构优化、优化后的鞣花酸化合物与NUDT5蛋白对接等几个阶段。分子对接使用Autodock Tools 1.5.6和Discovery Studio 2016软件完成。结果表明，鞣花酸与NUDT5蛋白的结合能为-3.98 kcal/mol，抑制剂常数为1.21 mM，具有抗乳腺癌的潜力。关键词:鞣花酸，分子对接，NUDT5，结合能，抑制剂常数
{"title":"Determination of Ellagic Acid Compound Activity as Anti Breast Cancer","authors":"I. Sanjaya, Defitiana Wanita","doi":"10.2991/snk-19.2019.19","DOIUrl":"https://doi.org/10.2991/snk-19.2019.19","url":null,"abstract":"This research was conducted to determine the activity of ellagic acid compounds as anti-breast cancer. The research was carried out through Molecular Docking in silico with several stages such as optimization of the structure of 3D ellagic acid compounds and docking between optimized ellagic acid compounds and NUDT5 protein. Molecular docking is done using the software of Autodock Tools 1.5.6 and Discovery Studio 2016. The results showed that ellagic acid has the potential as an anti-breast cancer compound based on its binding energy to the NUDT5 protein of -3.98 kcal/mol and an inhibitor constant of 1.21 mM. Keywords—ellagic acid, molecular docking, NUDT5, binding energy, inhibitors constant","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"61 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120916187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Redox reactions is spontaneous which can produce electrons flow. This condition can make corrosion of ferrum metal.. The electrons flow is not observed (submicroscopic aspect), so requires visualization. Strategy for visualizing submicroscopic aspect is analogy learning. The electrons flow can be analogous by the flow of waterfall. This research aims to examine the effect of analogy on the achievement of students’ understanding. The research used quasy experiment method with a nonequivalent posttest only control group design, so that there were an inquiry class by analogy (ICBA) and an inquiry class without analogy (ICWA). The results of mann whitney u test, u count = 313.5 were smaller than u table 526, so there was a significant difference between two classes, with a higher mean rank in ICBA. However students on ICBA were identified as having a specific misconception (SM) on several concepts of corrosion. The percentage of students on ICBA who have SM on the concept of voltaic series, prediction of metal rust, prevention of corrosion through metal coating, and cathodic protection were 46.67%, 46.67%, 66.67%, and 56.67%. The analog concept is not well understood by students, so potentially brings up SM. Analogies requires the students’ reason ability, because students conclude the submicroscopic aspects of corrosion through analyzing similarity and difference between analogous concept and target concept. In other words, analogy learning was giving submicroscopic aspect by indirect visualization. The results of other researches indicate that the reasoning ability of high school students is still low. The reasoning process requires students’ ability to analyze and conclude submicroscopic aspects of corrosion topic. A literation study of the reasoning ability of high school students is needed to explain the occurrence of SM, even though they have been given indirect visualization by analogy. Keywords—Analogy, Misconception, Reasoning Ability,
{"title":"Students’ Misconceptions on Understanding Corrosion Topic by and without Analogy","authors":"F. Asih, S. Ibnu, S. Suyono, Suhadi Suhadi","doi":"10.2991/snk-19.2019.31","DOIUrl":"https://doi.org/10.2991/snk-19.2019.31","url":null,"abstract":"Redox reactions is spontaneous which can produce electrons flow. This condition can make corrosion of ferrum metal.. The electrons flow is not observed (submicroscopic aspect), so requires visualization. Strategy for visualizing submicroscopic aspect is analogy learning. The electrons flow can be analogous by the flow of waterfall. This research aims to examine the effect of analogy on the achievement of students’ understanding. The research used quasy experiment method with a nonequivalent posttest only control group design, so that there were an inquiry class by analogy (ICBA) and an inquiry class without analogy (ICWA). The results of mann whitney u test, u count = 313.5 were smaller than u table 526, so there was a significant difference between two classes, with a higher mean rank in ICBA. However students on ICBA were identified as having a specific misconception (SM) on several concepts of corrosion. The percentage of students on ICBA who have SM on the concept of voltaic series, prediction of metal rust, prevention of corrosion through metal coating, and cathodic protection were 46.67%, 46.67%, 66.67%, and 56.67%. The analog concept is not well understood by students, so potentially brings up SM. Analogies requires the students’ reason ability, because students conclude the submicroscopic aspects of corrosion through analyzing similarity and difference between analogous concept and target concept. In other words, analogy learning was giving submicroscopic aspect by indirect visualization. The results of other researches indicate that the reasoning ability of high school students is still low. The reasoning process requires students’ ability to analyze and conclude submicroscopic aspects of corrosion topic. A literation study of the reasoning ability of high school students is needed to explain the occurrence of SM, even though they have been given indirect visualization by analogy. Keywords—Analogy, Misconception, Reasoning Ability,","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121021981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Waste treatment has been carried out to reduce the presence of contaminants such as the content of copper (Cu) which is very dangerous for health. One of the efforts made is by adsorption using activated carbon. The purpose of this study was to determine the efficiency of activated carbon adsorption on Cu in wastewater by using laboratory scale prototypes. Determination of Cu concentration using AAS while the morphology was determined using SEM. The results showed that activated carbon was able to reduce the concentration of Cu in the waste up to 98% with a mass of carbon 125 grams and an interaction time of 5 hours. Keywords— adsorption, activated carbon, Cu metal, waste
{"title":"Adsorption of copper metal waste in prototypes on a laboratory scale","authors":"N. Herdyastuti, R. Rusmini, S. E. Cahyaningrum","doi":"10.2991/snk-19.2019.11","DOIUrl":"https://doi.org/10.2991/snk-19.2019.11","url":null,"abstract":"Waste treatment has been carried out to reduce the presence of contaminants such as the content of copper (Cu) which is very dangerous for health. One of the efforts made is by adsorption using activated carbon. The purpose of this study was to determine the efficiency of activated carbon adsorption on Cu in wastewater by using laboratory scale prototypes. Determination of Cu concentration using AAS while the morphology was determined using SEM. The results showed that activated carbon was able to reduce the concentration of Cu in the waste up to 98% with a mass of carbon 125 grams and an interaction time of 5 hours. Keywords— adsorption, activated carbon, Cu metal, waste","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129631818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Irvandar Nurviandy, Kusumawati Dwiningsih, Ahlan Riwahyu Habibi, Akhmad Fitriadi Akbar
This study aims to determine the validity of Interactive Multimedia with 3D Visualization to Train the Spatial Visual Intelligence of Class X High School Students on Metallic Bonding Materials. Validity is tested through quality of content and goals, instructional quality, and technical quality. Development is carried out using the ADDIE model (Analysis, Design, Development or Production, Implementation or Delivery and Evaluations). This research is limited only in 3 stages, namely Analysis, Design, and Development. Interactive multimedia is said to be valid if the minimum achievement level scores in the range 61-80 with good qualifications based on the eligibility criteria and product revisions which are adaptations of Siti Muriati, 2013. Based on the analysis that has been done, it is found that interactive multimedia with 3D visualization developed is stated valid with an average percentage of content validation by material experts that is 96% and construct validation by material experts that is 91.82% are in the feasible category with a very good predicate. Thus, the results of this study indicate that interactive multimedia with 3D visualization on metal bonding material can be declared valid.
{"title":"Validity of Interactive Multimedia with 3D Visualization to Practice the Spatial Visual Intelligence of Class X High School Students on Metallic Bonding Materials","authors":"Irvandar Nurviandy, Kusumawati Dwiningsih, Ahlan Riwahyu Habibi, Akhmad Fitriadi Akbar","doi":"10.2991/snk-19.2019.33","DOIUrl":"https://doi.org/10.2991/snk-19.2019.33","url":null,"abstract":"This study aims to determine the validity of Interactive Multimedia with 3D Visualization to Train the Spatial Visual Intelligence of Class X High School Students on Metallic Bonding Materials. Validity is tested through quality of content and goals, instructional quality, and technical quality. Development is carried out using the ADDIE model (Analysis, Design, Development or Production, Implementation or Delivery and Evaluations). This research is limited only in 3 stages, namely Analysis, Design, and Development. Interactive multimedia is said to be valid if the minimum achievement level scores in the range 61-80 with good qualifications based on the eligibility criteria and product revisions which are adaptations of Siti Muriati, 2013. Based on the analysis that has been done, it is found that interactive multimedia with 3D visualization developed is stated valid with an average percentage of content validation by material experts that is 96% and construct validation by material experts that is 91.82% are in the feasible category with a very good predicate. Thus, the results of this study indicate that interactive multimedia with 3D visualization on metal bonding material can be declared valid.","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"2002 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127400362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of this study to determine the effect of using atomic models interactive multimedia flash based on students learning outcomes, student learning outcomes that will be measured is how much the value increases obtained by students and the minimum completeness criteria obtained by students. The trials carried out using the one group pretestposttest design study design. Atomic models interactive multimedia were tested limited to 12 students of class XI MIPA 4 of Senior High School 1 Kamal Bangkalan who had obtained atomic structure material. Based on the results of the study it can be concluded that multimedia developed according to its effectiveness is reviewed based on an increase in N-gain of as much as 0,95 with a high category, and the class completes classically with each student completing individually > 75. Thus the results of this study indicate the use of multimedia can improve student learning outcomes Keywords—Atomic models interactive multimedia, student learning outcomes, effectiveness.
{"title":"The Effect Of Using Atomic Models Interactive Multimedia Flash Based On Students Learning Outcomes","authors":"Sihaqqul Firdaus, R. Hidayah","doi":"10.2991/snk-19.2019.43","DOIUrl":"https://doi.org/10.2991/snk-19.2019.43","url":null,"abstract":"The purpose of this study to determine the effect of using atomic models interactive multimedia flash based on students learning outcomes, student learning outcomes that will be measured is how much the value increases obtained by students and the minimum completeness criteria obtained by students. The trials carried out using the one group pretestposttest design study design. Atomic models interactive multimedia were tested limited to 12 students of class XI MIPA 4 of Senior High School 1 Kamal Bangkalan who had obtained atomic structure material. Based on the results of the study it can be concluded that multimedia developed according to its effectiveness is reviewed based on an increase in N-gain of as much as 0,95 with a high category, and the class completes classically with each student completing individually > 75. Thus the results of this study indicate the use of multimedia can improve student learning outcomes Keywords—Atomic models interactive multimedia, student learning outcomes, effectiveness.","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125606965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
—Reading, Questioning, and Answering (RQA) is a constructivist based learning strategy. The implementation of RQA can motivate undergraduate students to read the assigned material and have an impact on improving the understanding of learning material. This study aims to describe undergraduate students' thinking abilities in the Authentic Assessment of Knowledge, Skills, and Attitude material in the Process and Learning Outcomes Assessment of Chemistry (PLOAC) subject through the implementation of RQA-based textbooks. The design used is One Group Pretest-Posttest Design. This research was carried out in the chemistry department of Universitas Negeri Surabaya with the subjects of 25 undergraduate students. The results showed that: (1) Based on Bloom's taxonomy in Krathwohl's version, thinking ability obtain the percentage of undergraduate student achievement on each cognitive dimension include apply (C3) of 92.00, analyze (C4) of 68.00, and create (C6) of 86.67; and (2) N-gain scores for each cognitive dimension of thinking ability obtained have medium and high criteria. Based on the results of the study, the RQA strategy can be used as an alternative to empower undergraduate students' thinking ability.
{"title":"Reading, Questioning, and Answering (RQA) Strategies’: an Alternative to Empowering Undergraduate Student Thinking Abilities","authors":"H. Nasrudin, U. Azizah","doi":"10.2991/snk-19.2019.32","DOIUrl":"https://doi.org/10.2991/snk-19.2019.32","url":null,"abstract":"—Reading, Questioning, and Answering (RQA) is a constructivist based learning strategy. The implementation of RQA can motivate undergraduate students to read the assigned material and have an impact on improving the understanding of learning material. This study aims to describe undergraduate students' thinking abilities in the Authentic Assessment of Knowledge, Skills, and Attitude material in the Process and Learning Outcomes Assessment of Chemistry (PLOAC) subject through the implementation of RQA-based textbooks. The design used is One Group Pretest-Posttest Design. This research was carried out in the chemistry department of Universitas Negeri Surabaya with the subjects of 25 undergraduate students. The results showed that: (1) Based on Bloom's taxonomy in Krathwohl's version, thinking ability obtain the percentage of undergraduate student achievement on each cognitive dimension include apply (C3) of 92.00, analyze (C4) of 68.00, and create (C6) of 86.67; and (2) N-gain scores for each cognitive dimension of thinking ability obtained have medium and high criteria. Based on the results of the study, the RQA strategy can be used as an alternative to empower undergraduate students' thinking ability.","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131031901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Food is a basic need for human survival. Various vegetable and animal sources are used to fulfill this. Through the production of potato donuts and beef meatballs, Auliya SMEs has played an active role as one of the providers to fulfill this need. Along with increasing public awareness of food health, organoleptic quality and shelf life are two factors that also determine consumer interest in processed food products. To obtain a longer shelf life, it was evaluated and compared organoleptic quality and nutritional content of "Auliya" donuts and meatballs in vacuum and non-vacuum packaging. The results showed an increase in shelf life of 65.71% for potato donuts and 138.70% in beef meatballs which were vacuum packed. Vacuum packaging is also able to better maintain nutritional levels until a certain period of deviation. Meanwhile, under the same conditions, organoleptic test results showed no difference in the level of preference for food products in vacuum and non-vacuum packaging. Keywords—donut, meatball, vacuum, shelf-life, nutritional content
{"title":"Increased Storage and Nutrition Content of Processed Foods through Vacuum Packaging","authors":"N. Purwidiani, P. Setiarso, N. Kusumawati","doi":"10.2991/snk-19.2019.7","DOIUrl":"https://doi.org/10.2991/snk-19.2019.7","url":null,"abstract":"Food is a basic need for human survival. Various vegetable and animal sources are used to fulfill this. Through the production of potato donuts and beef meatballs, Auliya SMEs has played an active role as one of the providers to fulfill this need. Along with increasing public awareness of food health, organoleptic quality and shelf life are two factors that also determine consumer interest in processed food products. To obtain a longer shelf life, it was evaluated and compared organoleptic quality and nutritional content of \"Auliya\" donuts and meatballs in vacuum and non-vacuum packaging. The results showed an increase in shelf life of 65.71% for potato donuts and 138.70% in beef meatballs which were vacuum packed. Vacuum packaging is also able to better maintain nutritional levels until a certain period of deviation. Meanwhile, under the same conditions, organoleptic test results showed no difference in the level of preference for food products in vacuum and non-vacuum packaging. Keywords—donut, meatball, vacuum, shelf-life, nutritional content","PeriodicalId":256735,"journal":{"name":"Proceedings of the National Seminar on Chemistry 2019 (SNK-19)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114182770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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