Article Per Year (5 Year)
p-Index From 2020 - 2025
1.431
P-Index
This Author published in this journals
All Journal Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Jurnal Yudistira Journal Innovation In Education Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Kristina Tresia Leto
Unknown Affiliation
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Nursing Physics Public Health

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Studi Eksploratif Mengenai Kadar Garam Tradisional Di Kampung Garam Kabupaten Sikka Agustina Sulastri; Kristina Tresia Leto; Kartini Rahman Nisa
Jurnal Yudistira : Publikasi Riset Ilmu Pendidikan dan Bahasa Vol. 2 No. 2 (2024): April : Jurnal Yudistira : Publikasi Riset Ilmu Pendidikan dan Bahasa
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/yudistira.v2i2.706

Abstract

This study aims to determine the levels of NaCl, to compare with the Indonesian National Standard and to see the influence of the environment and the cooking process on traditional salt produced by salt farmers in Kampung Garam, Sikka Regency. This research was conducted in Kampung Garam, Sikka Regency and the Mathematics and Natural Sciences Laboratory of the Muhamadiyah Maumere. The sample of this research is 3. The sampling technique used is purposive sampling. This study uses a qualitative exploratory method. After the data is collected, it is followed by data analysis, namely by data reduction, data presentation, triangulation and drawing conclusions. Based on the research results, the NaCl content in sample A was 90.38%, salt samples B and C were 85.71% and 79.37%. The process of making salt in Uneng City includes several stages: 1) preparation of raw salt raw materials; 2). coarse salt is transferred in a filter container poured with water; 3) this coarse salt drained water is collected in a bucket; 4) salt water is cooked in a container that has been prepared at 90°C; 5) after a few hours, salt crystals form; 6) and salt drying is done by filtering. Therefore, the results of the study concluded that the quality of salt was seen from the NaCl content produced from three locations in Salt Village, Sikka Regency using the evaporation method with the help of fuel heat according to (SNI 4435-2017) on the basis of dry weight (adbk) for sample A including quality K2 salt (medium quality), samples B and C belong to K3 salt quality (low quality) and there are environmental influences and the salt cooking process on production so that it is not suitable for consumption.
Pengaruh Penambahan Ampas Kopi Sebagai Adsorben Pada Limbah Cair Tenun Ikat Clarita Vikanova Seli; Kristina Tresia Leto; Kartini Rahman Nisa
Journal Innovation In Education Vol. 2 No. 2 (2024): Juni : Journal Innovation in Education (INOVED)
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/inoved.v2i2.1057

Abstract

Synthetic dyes contain naphthol dyes, one of which contains Cr metal. tie woven wastewater treatment can be carried out using adsorption methods, one of which is using activated charcoal. This study aims to determine the effect of using coffee grounds as an adsorbent on woven textile waste. The method in this study is an experimental method in the form of Posttest Only Control Group Design. The test parameters include the degree of acidity (pH), organoleptic test, and Chromium (Cr) content test. The results showed that the pH test before contact with activated charcoal had a pH value of 5 (acid), after contact with activated charcoal the pH value became 7 (neutral). Thus, the pH value can be said to meet the quality standards of tie-weaving liquid waste. Meanwhile, in organoleptic testing, there was a change in color from black waste to clear yellow. Whereas in testing the Cr level before contact with activated charcoal reached 4.60 mg/l after the addition of a dose of activated charcoal the Cr level decreased to 0.46 mg/l, 0.22 mg/l, and 0.38 mg/l. The effectiveness of the adsorbent ability of the Cr content test in each treatment (P1, P2, P3), still meets the requirements for the quality standard of woven textile wastewater from Cr metal dyes, SNI No 06-6989-22-2004, it can be concluded that the addition of coffee grounds has an effect on of textile woven wastewater.
Pemanfaatan Bahan Pangan Untuk Pembuatan Bolu Dari Daun Kelor Leto, Kristina Tresia; Kartini Rahman Nisa; Kristina Tresia Leto; Agustina Mimin; Agustina Sulastri; Clarita Vika Nova Seli
Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Vol. 1 No. 3 (2021): Desember: Jurnal Pengabdian Kepada Masyarakat Indonesia (JPKMI)
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkmi.v1i3.190

Abstract

Daun kelor merupakan tanaman lokal yang mengandung zat gizi yang tinggi, berupa sayuran yang multiguna.Hampir semua bagian dari tanaman kelor ini dapat dimanfaatkan ,karena mengandung senyawa aktif dan gizi lengkap. Daun kelor juga kaya vitamin A dan C khususnya betakaroten yang ada pada vitamin A. Namun pemanfaatannya sebagai bahan pangan masih sangat rendah. Agar zat gizi yang terkandung dalam daun kelor dapat dimanfaatkan tubuh, maka perlu diolah menjadi makanan yang digemari oleh masyarakat seperti halnya pembuatan bolu dari daun kelor. Karena itu, tim pengabdian masyarakat melakukan kegiatan pengabdian di Desa Bola dengan melaksanakan pelatihan pembuatan bolu dari daun kelor . Dalam pengabdian kegiatan masyarakat ini, masyarakat Desa Bola di berikan pemahaman tentang kandungan gizi dari daun kelor dan mampu mengaplikasikan kelor dalam kehidupan sehari-hari. Selain itu, masyarakat dilatih dalam pengolahan daun kelor untuk pembuatan bolu. Berdasarkan kegiatan pengabdian masyarakat ini, sebagai tindak lanjut, diharapkan kepada masyarakat untuk ambil bagian dalam melakukan kegiatan pelatihan dalam pembuatan bolu dari daun kelor.
Penggunaan Serbuk Gergaji Kayu Sebagai Adsorben Pada Limbah Cair Tenun Ikat Agustina Mimin; Kristina Tresia Leto; Sunarwin Sunarwin
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 1 No. 4 (2023): Desember : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v1i4.1741

Abstract

Research has been carried out on the use of wood sawdust as an adsorbent for ikat weaving liquid waste. This research aims to determine the effect of using wood sawdust as an adsorbent on ikat weaving liquid waste. This research was carried out at the IKIP Muhammadiyah Maumere Laboratory and the Maumere Health Service Laboratory. The sample in this study was ikat woven liquid waste which was divided into four treatments, namely Control (K) and the other three were treatments (P1, P2, P3) with the addition of 1,2 and 3 grams of activated charcoal. The method in this research is an experimental method with the research design being True Experimental in the form of Posttest Only Control Group Design. The characteristic tests in this research include a water content test with a value of 0.0833%, and a yield test with a value of 1.9634%. The test parameters used include the degree of acidity (pH), Manganese (Mn) content test and organoleptic test. The research results showed that the pH value before contact with activated charcoal was 9.63 (alkaline pH), and after contact with activated charcoal at a dose of 3.0 grams the pH value became 8.01 (alkaline pH). In testing Mn levels before contact with activated charcoal, the value was 4.60 mg/l and after adding 1.0 grams, 2.0 grams and 3.0 grams of activated charcoal, there was a decrease in Manganese levels respectively, namely from 3 mg/l. , 2.78 mg/l and 1.83 mg/l. Furthermore, for the organoleptic test, there was a change in the color of the ikat woven liquid waste from initially black to clear yellow. Thus, it can be concluded that the addition of activated charcoal from sawdust can have an effect on ikat weaving liquid waste.
Skrining Fitokimia Daun Delima (Punica Granatum L.) Chusnul Mar'iyah Mahmud; Nadila Nadila; Muhammad Jalaluding; Kristina Tresia Leto
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Jurnal Matematika dan Ilmu Pengelatuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v3i1.4758

Abstract

Pomegranate (Punica granatum L.) is a fruit plant that is easy to grow in almost all climates. The utilization of this plant as a traditional medicine is very varied and all parts of the pomegranate plant (Punica granatum L.) can be used as medicine, one of which is pomegranate leaves. This study aims to determine the content contained in pomegranate leaves. Pomegranate leaves were extracted by maceration with 96% ethanol solvent. The extraction results then go through a color reaction compound test process. Testing of color reaction compounds includes saponins, steroids/terpenoids, flavonoids, alkaloids, and tannins. This study aims to analyze the content of chemical compounds contained in pomegranate leaves extracted using 96% ethanol. This research method includes maceration extraction and chemical compound screening tests using chemical reagents. The results showed that pomegranate leaves extracted using 96% ethanol solvent and phytochemical screening showed positive results on alkaloid compounds, steroids/terpenoids, flavanoids, tannins but on saponin metabolites showed negative results.
Identifikasi Senyawa Fitokimia Ekstrak Daun Waru (Hibiscus Tiliaceus) Kristina Tresia Leto; Aiynun Rukmanti; Asti Junianti; Mutia malmar; Sasmita Putri Hairani
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Jurnal Matematika dan Ilmu Pengelatuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v3i1.4759

Abstract

Waru leaves (Hibiscus tiliaceus) are one of the herbal plants that grow well in Indonesia. Empirically, waru leaves have many benefits for treating flu, accelerating the maturation of boils, tonsillitis, and can be used as a hair fertilizer. This study aims to determine the content of waru leaves (Hibiscus tiliaceus). Waru leaves (Hibiscus tiliaceus) are extracted by maceration with methanol solvent. The extraction results then go through a color reaction compound test process and confirmation test. Testing of color reaction compounds includes steroids, saponins, flavonoids, alkaloids, and tannins. This study aims to analyze the chemical compound content contained in waru leaves (Hibiscus tiliaceus) extracted using methanol solvent. This research method includes maceration extraction and chemical compound screening tests using chemical reagents. The results showed that waru leaves extracted using methanol solvent contain steroids, alkaloids, tannins, and saponins. It can be concluded that the chemical compounds contained in hibiscus leaves (Hibiscus tiliaceus) are relevant to human health.
Skrining Fitokimia Daun Katang – Katang (Ipomoea Pescaprae L. ) Ayuni Setiawati; Ensu Ensu; Muhammad Said; Yeyen Yeyen; Kristina Tresia Leto
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Jurnal Matematika dan Ilmu Pengelatuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v3i1.4767

Abstract

Phytochemistry is a method used to determine the compounds found in plant essence. Phytochemical identification is carried out using chemical substances used in a reaction to determine the collection of secondary metabolite compounds. Indonesia is a country that has various types of medicinal plants, one of which is the leaves of Katang-katang (Ipomoea pes-caprae). Katang-katang is a tropical vine that is easy to find and belongs to the Convolvulaceae family. The utilization of this medicinal plant is one of the alternatives in an effort to treat a disease.  Along the road in the sandy beach area, many of these plants are found growing creeping on the edge of the shoreline, this plant has a trumpet-like flower and is known as Katang-katang (Ipomoea pes-caprae). (Ipomoea pescaprae L.). Empirically, people often use katang-katang plants to treat infections in wounds, relieve pain, and as antioxidants. The active compounds of katang-katang as antibacterial are terpenoids, steroids, saponins, tannins and flavonoids. The active compound that plays the most role is thought to be the flavonoid compound content.
Skrining Fitokimia Daun Sukun (Artocarpus Altilis) Fit, Safitri Rahmat; Siti Zuraidah; Deswita Deswita; Kristina Tresia Leto
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Jurnal Matematika dan Ilmu Pengelatuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v3i1.4770

Abstract

Breadfruit (Artocarpus heterophyllus) leaves are widely used in traditional medicine in Southeast Asia. Phytochemical screening of breadfruit leaves showed that the plant is rich in chemical contents that have potential as a source of natural medicine. The biological activity of breadfruit leaf phytochemicals showed potential in the treatment of various diseases. The benefits of phytochemicals (Development of natural medicines, Discovery of new chemical compounds, Development of cosmetic and food products, Improvement of quality of life through the use of natural products and Conservation of rare and endemic plants). this research uses the method Phytochemical screening of breadfruit leaves involves several stages: Extraction, Fractionation, Identification. The results stated that breadfruit leaves contain Steroid / Terpenoid compounds which indicate positive results in concentrated green, Saponin negative results that only precipitate not, Tannin positive results in blackish color, Flaphonoid positive results in red color and Alkoloid positive results in brown color.  
Co-Authors Agustina Mimin Agustina Sulastri Aiynun Rukmanti Asti Junianti Ayuni Setiawati Chusnul Mar'iyah Mahmud Clarita Vika Nova Seli Clarita Vikanova Seli Deswita Ensu Ensu Fit, Safitri Rahmat Kartini Rahman Nisa Kristina Tresia Leto Muhammad Jalaluding Muhammad Said Mutia Malmar Nadila Nadila Sasmita Putri Hairani Siti Zuraidah Sunarwin Sunarwin Yeyen Yeyen