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ANALYSIS OF ASCORBIC ACID AND BORAX USING PURPLE SWEET POTATO EXTRACT AS A COLORIMETRIC SENSOR IN FOOD AND DRINKS USING DIGITAL IMAGES As-Salimah, Ainun Mardiyah; Sutarno, Sutarno; Yani, Ariefa Primair; Karyadi, Bhakti; Firdaus, M Luthfi
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

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Abstract

The addition of ascorbic acid and borax to food and drinks if it exceeds the threshold limit can have dangerous effects on consumers. This research aims to create a simple and fast but accurate method for analyzing ascorbic acid and borax, using purple sweet potato extract as a colorimetric sensor and quantitative analysis using digital images. The results of the digital image have an accuracy of 99% with LOD (Limit of Detection) of 1.96% and LOQ (Limit of Quantity) with a value of 6.53% for ascorbic acid. As for borax, the LOD is 0.54% and the LOQ is 1.78%. Semi-quantitative tests for ascorbic acid and borax in food and drinks can be carried out using a cotton test kit. The wet noodle food sample tested (purchased from around the Bengkulu University campus) was proven not to contain borax because there was no color change. However, the packaged drink tested positive for ascorbic acid as indicated by a color change from purple to pink.
Kajian Bahan Bimbingan dan Konseling dalam Serat Wedhatama Sutarno, Sutarno; Barida, Muya
Jurnal Kajian Bimbingan dan Konseling Vol. 2, No. 3
Publisher : citeus

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Abstract

School Counselor or Counselor have to perform professional guidance and counseling services, such as developing guidance and counseling materials from various sources including international, national, and local sources. The purpose of this study is to obtain the guidance and counseling materials contained in the Serat Wedhatama which contains the teachings about morals and virtuous as a source of local teaching. This qualitative research using ethnographic model and explorative content analysis procedures, with a content analysis procedure. Results show that the teachings contained inside Serat Wedhatama are the values and teachings of virtuous morals that can be used as guidance and counseling materials, and can be packaged in the composition of information services and library display.
Studi Komparasi Kinerja Konselor dalam Layanan Konseling Individual Berdasarkan Self Evaluation dan Peer Evaluation Barida, Muya; Sutarno, Sutarno
Jurnal Kajian Bimbingan dan Konseling Vol. 3, No. 1
Publisher : citeus

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Abstract

The purpose of this study was to evaluate school counselor performance in organizing individual counseling services using self evaluation and peer evaluation. This study uses descriptive survey approach through descriptive comparative study. Subjects are school counselors in Special Region of Yogyakarta, especially Bantul District. Data analysis used Mann-Whitney U test. Based on result obtained by Mann-Whitney U significance value between self evaluation with peer evaluation is 0,657 (> 0,05). This means that there is no significant difference in counselor performance evaluation based on self evaluation and peer evaluation instruments.
Co-Authors - Jumaeri A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Abdat, Chadidjah Husain Abdillah, Guliston Abdul Mufid Abdurahman Abdurahman ACENG RUYANI Achmad Samsudin Adam Malik Aditya, Dicko Adrian Admira, Tb. M Adrie Adriano Adriano, Adriano Aesah, Siti Afidah, Umi Afrizal Mayub Agung Pramono, Agung Agus Murnomo Agustin, Kevin Ahmad Fali Oklilas Ahmad Laut Hasibuan Ahmad Mufarihin Ahmad Rifai Ahmad Rifai Ahmad Syamsuri Ahmad Zarkasi Aini, Isna Nur Akhtiar Sigit Samseno Akmal, Oktafiana AKTAVIA HERAWATI Al Malik, M. Warisa Al Mansur, Ahmad Jakfar Alfi Rachmansyah Amanulloh, Rivkih Amin Wahyudi Andika Persada Putera Andriani, Sefti Anggia, Anggia Anggraeniko, Litya Surisdani Apriyanto, Riki ARI SUSILOWATI Ariadne L Juwono, Ariadne L Ariani, Ririn Arief Budyantoro Ariefa Primair Yani Ariefa Primairyani, Ariefa Arif Rahman Ariyanto, Nova Arwin Arwin Arwin Arwin As-Salimah, Ainun Mardiyah Asep Indra Komara Asmarawati, Anggun P Asmuni Asmuni Atmaja, Ayu Indra Atryadi BAMBANG ARIYANTO, BAMBANG Bambang Purwanto, Muhammad Bambang Sugiantoro Bambang Tutuko Baskoro Adi Prayitno Baskoro Adi Prayitno Baskoro, Yesi Daniel Tri Bayangkari Karno, Adhitio Satyo BHAKTI KARYADI Budi Haryanto BUDI PRAMONO Budiono, R Chandra, Cindy CIAMAS, ELSERRA SIEMIN D. 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