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Desy Kurniawati
Universitas Negeri Padang
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Training on Diversification of Banana and Taro Food into Healthy Food Products with Economical Value in Bungus Barat Village, Padang City Desy Kurniawati
Pelita Eksakta Vol 4 No 1 (2021): Pelita Eksakta Vol. 4 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol4-iss1/141

Abstract

In West Bungus Village, there are abundant bananas and taro crops. So far, bananas and taro have not been processed into nutritious healthy food products with economic value. This condition becomes a problem that needs to be found as a solution. if bananas and taro can be processed further, the selling value will be higher. From the situation analysis, the people of West Bungus Village need to be equipped with the knowledge on how to process bananas and taro into healthy nutritious foods that have economic value. Banana and taro processing techniques can be applied through education and training on the application of Applied Chemistry. This activity has had a positive impact, which has increased the knowledge and skills of the people of West Bungus Village in processing bananas and taro into alternative food sources and nutritious foods that have marketable economic value.
Utilization of Cassava Rich in Insoluble Fiber as an Alternative Prebiotic to Increase Family Immunity in Nagari Katapiang, Batang Anai District, Padang Pariaman Regency Melindra Mulia; Umar Kalmar Nizar; Desy Kurniawati; Fauzana Gazali
Pelita Eksakta Vol 4 No 2 (2021): Pelita Eksakta Vol. 4 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol4-iss2/157

Abstract

Cassava is widely available, even abundant in the Katapiang Urban Village, Batang Anai Sub-district. Unfortunately, society does not know the benefits of cassava as a prebiotic that is beneficial for family health. This community service activity aims to increase knowledge about prebiotics from cassava and how to process them so that it is beneficial to society. In this way, the health of the family can be maintained. The activity was carried out at the Masjid Istiqomah, Katapiang Urban Village, Batang Anai Sub-district, Padang Pariaman District, involving 18 targets. The activities implementation is divided into two stages, namely guided and independent activities. In the guided activities, interactive counseling and practical methods are used. Meanwhile, in independent activities, the targets made spice drinks in groups. The results of the activity showed targets’ knowledge about prebiotics and how to process cassava had increased so that they can get optimal benefits for health. The target is also interested in producing and consuming, their own processed cassava that has been made.
PKM Utilization of Natural Ingredients, Spices and Coconut as Family Drinks in an Effort to Increase Body Immune During Covid Conditions in Bungus Teluk Kabung District, Bungus Barat Village, Padang City Suryelita Suryelita; Syamsi Aini; Desy Kurniawati; Indang Dewata; Sri Benti Etika; Melindra Mulia; Trisna Kumala Sari
Pelita Eksakta Vol 5 No 1 (2022): Pelita Eksakta Vol. 5 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol5-iss1/163

Abstract

During the pandemic, people's activities are limited outside the home. However, this condition has an impact on their income economy. People can return to their activities to meet their needs by implementing a new normal life through health protocols. However, information and knowledge on how to maintain body immunity and the implementation of a new normal life are still limited. Therefore, it is necessary to disseminate information about the importance of body immunity during this pandemic. One of the areas affected by this pandemic is Bungus Barat Village, Bungus Teluk Kabung District. To answer the problems that arise in this area, it is necessary to carry out service activities that aim to provide information to the community, especially mothers who are the spearheads of families who are members of the association of PKK women in West Bungus Village on how to increase and maintain immunity during the pandemic. This increase in immunity includes lifestyle and diet that must be followed in the new normal life. Participants in this service activity include representatives of PKK women in West Bungus Village. The activity is in the form of implementation which is divided into two stages, namely guided activities, and independent activities. In the guided activities, interactive and practical counseling methods are used. Meanwhile, in independent activities, the target is to carry out the practice of making spice drinks and VCO in groups again. The results of the activity showed an increase in target knowledge about kitchen spices and coconut into VCO and nutritious spice drinks. The target community, namely PKK women, is also interested in consuming and producing their own VCO and spice drinks that have been made. In addition, from this activity, the community gained a good understanding of what to do during this pandemic, not only in complying with health protocols but also in regulating lifestyle and eating patterns.
The Development of an Integrated E-Module of Scientific Literacy and Video Demonstration Using a Problem-Based Learning Model for High School Students on Acids and Bases Yani Puspita Yani; Hardeli Hardeli; Budhi Oktavia; Desy Kurniawati
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 2 (2022): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i2.1306

Abstract

This study aims to develop e-module teaching materials based on problem-based learning integrated scientific literacy and demonstration videos on acid and base materials that are useful for assisting the learning process of students. This research belongs to Educational Design Research (EDR) with the Plomp development model. The research tools used are interview forms, validity, and practicality questionnaires. The electronic module is verified by six verifiers, Including three lecturers and chemistry teachers. The data shows that problem-based learning e-module teaching materials and equipped with scientific literacy along with demonstration videos are needed. The data were analyzed using the Content Validity Ratio (CVR), the Aikens'V formula, and the percentage of practicality. Analysis of the validity questionnaire data showed an average CVR score of 1 (for content validity) and Aikens' V average score of 0.88 (for construct validity). Analysis of the practicality questionnaire data showed an average score of 90% and 89% (for small group and field test practicalities). The data analysis shows that the e-module has a high level of validity and practicality. Therefore, it can be concluded that the developed electronic module teaching materials based on problem learning integrated scientific literacy and demonstration videos are valid and practical.
Adsorpsi Zat Warna Rhodamine B Dengan Karbon Aktif Kulit Durian sebagai Adsorben Azhma Ulya; Edi Nasra; Ali Amran; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1193.301 KB) | DOI: 10.24036/p.v11i2.113371

Abstract

Rhodamine, B colorant is one of the dyes present in the waste coming from the textile/dyeing industry. Rhodamin B dyes found in waters can cause damage to ecosystems both animals and plants, so a method is needed to overcome the impact of pollution by Rhodamin B waste. One of the most efficient methods is the adsorption method using activated carbon from Durian peels. Adsorption,process is done by using a variation,of pH (2, 3, 4, 5 and 6), and variation of stirring speed (50, 100, 150, 200, 250 rpm). The results showed the absorption capacity at optimum conditions for the absorption of Rhodamine B at pH 4 and stirring speed at 200 rpm with absorption capacity of 24,643 mg/g with absorption percentage 96,0292%.
Analisis Proksimat Karbon Aktif Kulit Langsat Annisa Nabila Rahma; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116189

Abstract

Activated carbon is made from various raw materials, one of which is langsat leather. One of the uses of langsat peel activated carbon is as an adsorbent. The langsat peel activated carbon is made by carbonization process at 400 °C in a furnace. Activated carbon that has been carbonized will be activated with 0.1 M HNO3 for 2 hours. Proximate analysis which includes water content, ash content, volatile matter content, bonding carbon content and iodine uptake. Overall, the proximate analysis of activated carbon from langsat peel has a value that meets the requirements of SNI No. 06-3730-1995. Keywords — langsat peels, activated carbon, activation
Adsorpsi Ion Logam Cd2+ dengan Menggunakan Cangkang Telur Ayam Ras Nova Fitriani; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116127

Abstract

The growing industrial growth has resulted in more and more liquid waste containing heavy metals. Therefore we need a way to reduce these heavy metals. One way is adsorption using eggshells. The purpose of this study was to determine the optimum conditions for the adsorption of Cd2+ metal ions on the effect of variations in pH and stirring speed and to determine the adsorption capacity of eggshells for Cd2+ metal ions. This study used the batch method with variations in pH and stirring speed. The optimum conditions obtained from each variation were at pH 4, and stirring speed at 250 rpm. The adsorption capacity at the variation of pH was 2,3875 mg/g at 42,18% and adsorption capacity at variation in stirring speed was 3,3 mg/g at 24,01%.
Optimasi Adsorpsi Ion Logam Cu2+ dengan Menggunakan Cangkang Telur Ayam Ras Nesya Febi Utami; Edi Nasra; Desy Kurniawati; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115915

Abstract

adsorption is a method of waste treatment that has the potential to remove toxic heavy metals. One of the factors that influence the occurrence of the adsorption process is the presence of a biological material called a biosorbent. The adsorption method is a method of absorbing heavy metal contamination in liquid waste that is very efficient and effective, as well as easy and cheap economically because of the use of biomaterials that are very cheap and can be regenerated. Chicken egg shell contains Calcium Carbonate (CaCO3) of 98.41% and has natural pores of 10,000 to 20,000 so it is estimated that it can absorb solutes. Based on the known mineral composition, chicken egg shells are composed of CaCO3 (98.41%), Ca3(PO4)2 (0.75%), and MgCO3 (0.84%). So it can be seen that chicken egg shells have a high calcium carbonate content, where calcium carbonate is a polar adsorbent. The optimum conditions for each variable in contacting broiler egg shells that have been activated with Cu2+ metal ions are optimum at pH 4, concentration of 250 ppm.
Silika Gel Termodifikasi Dimetilamin Sebagai Penyerap Anion Fosfat Delfitri Delfitri; Budhi Oktavia; Desy Kurniawati; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116103

Abstract

Silica gel is one type of dry silica gel which is widely used as an adsorbent. Silica has the ability to absorb because it has two active site groups that can be activated, namely a silanol group and a siloxane group. This modification was carried out to increase the ability of silica to absorb ions, one of which was phosphate anion. In waters, very high levels of phosphate anion can disrupt the marine biota ecosystem because it can cause uetrophication or decreased oxygen levels that enter the waters. The modifier compound used is dimethylamine (DMA). Silica and dimethylamine can bind to several linking compounds, namely glycidopropyltrimethoxylan (gptms). The modified silica was characterized by FTIR and the absorption results were analyzed using a UV-Vis spectrophotometer. The results of the comparison of the absorption capacity of phosphate anions after modification are greater than before modification, where the absorption capacity of silica before modification is 1,2601 mg/g with an absorption percentage of 54,46% and silica after modification is 1.9686 mg/g with an absorption percentage of 1,9686 mg/g. 85,08%.Keywords — Silica gel, Modification, Dimetilamine, Phosphate Anion
Efektivitas E-Modul Pada Materi Sistem Koloid Berbasis Discovery Learning Terhadap Hasil Belajar SMA/MA Dewi Rika Aryani; Desy Kurniawati
Entalpi Pendidikan Kimia Vol 3 No 4 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (983.294 KB) | DOI: 10.24036/epk.v3i4.300

Abstract

The 2013 curriculum implemented by the government is expected to improve the quality of education. The scientific approach is the approach used in K13, which is a science-based approach. The research carried out is a follow-up study of the development of discovery learning-based colloid system e-modules for high school/MA students which has been tested for validity and practicality, but its effectiveness has not been tested. The purpose of this experiment is to see the effectiveness of using discovery learning e-modules for high school/MA students. The type of research used is pre-experimental using One Group-Pretest-Postest. The results obtained from this study are t-test with a significance level of 0.05, namely sig(2-Tailed) data obtained 0.000 proving that H0 is rejected, because the value of Sig <0.05 and H1 is accepted. The result of the N-Gain value in the sample class is 0.816. Based on the results of this study, it shows that the application of this e-module is very good in achieving goals and can develop learning outcomes for high school students
Co-Authors Afdina Afdina Ahmad Maulana Ardi Ali Amran Ananda Putra Annisa Nabila Rahma Arif Juliari Kusnanda Aroma Karmila Azhma Ulya Berliana Salsabila Budhi Oktavia Delfitri Delfitri Deski Beri Deva Indriyani Dewi Rika Aryani Dwi Hartati Edi Nasra Elinda Fithriana Emmilya Febri Marthin Fadhilatu Zikra Fadilla Yuri Merti Fauzan Aulia Akbar Fauzana Gazali Hardeli Hardeli Hardeli Hary Sanjaya Hesty Parbuntari Indang Dewata Khalisa Latisma Latisma Maifil Dwi Andrean Mufi Nasda Mulia, Melindra Najla Dhifa Tofanny Nesya Febi Utami Niza Lian Pernadi Nofrianto Nofrianto Nova Fitriani Nur Hafni Hasibuan Olga Tiara Rizki Rahadian Zainul Rahmi Eka Witri Riga Riga Romy Dwipa Yamesa Away Salmariza Sy. Sisri Wartati Sri Benti Etika Suryelita . Syamsi Aini Trisna Kumala Sari Umar Kalmar Nizar Yani Puspita Yani Yeni, Isra Yerimadesi Yona Prestica