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All Journal Buletin Peternakan PRIMA: Journal of Community Empowering and Services TIN: TERAPAN INFORMATIKA NUSANTARA Jurnal Sains dan Teknologi Peternakan Warta Perkaretan Jurnal Teknologi Hasil Peternakan Journal of Biobased Chemicals (JOBC) Sewagati Jurnal Agripet

Rahmawati, Atiqa

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Author-ID : 1497084

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Pelatihan Penyamakan Kulit Kelinci Berbulu kepada Peternak di Terminal Kelinci Bantul Rahmawati, Atiqa; Ajie, Baskoro; Robbika, Fadzkurisma; Wibowo, R. Lukas Martindro Satrio Ari; Yuliatmo, Ragil; Abdullah, Sofwan Siddiq; Ukhdiyati, Mustafidah
Sewagati Vol 8 No 2 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i2.849

Kulit kelinci merupakan salah satu limbah yag dihasilkan dari peternakan kelinci. Pada umumnya kulit kelinci dimanfaatkan untuk pakan ternak, dan kulit yang sudah hampir membusuk dibuang ke badan air. Pemanfaatan kulit kelinci dapat dilakukan dengan menyamak kulit baik dengan bulu atau tanpa bulu. Pemanfaatan kulit kelinci dengan metode penyamakan dapat meningkatkan nilai jual kulit kelinci. Tujuan kegiatan pengabdian masyarakat yaitu untuk memberikan pengetahuan kepada peternak kelinci dalam memanfaatkan kulit kelinci sehingga menghasilkan produk yang memiliki nilai jual yang lebih tinggi dibandingkan kulit kelinci mentah. Metode kegiatan pengabdian masyarakat yaitu dimulai dengan observasi masalah, melakukan FGD dengan stakeholder, perumusan solusi dengan tim pengabdian, persiapan alat dan bahan, pelaksanaan kegiatan, dan pelaporan kegiatan. Kegiatan pengabdian yaitu penyamakan kulit kelinci beserta bulunya dengan menggunakan bahan penyamak kromium dan aldehid. Hasil kegiatan program pengabdian yaitu kulit kelinci samak bulu yang dengan suhu kerut 85oC, mempunyai pegangan lemas dan bulu tidak mudah rontok. Sedangkan hasil evaluasi instruktur mempunyai rata-rata keseluruhan dari tiap aspek sebesar 83,8 (skala 0-100) dan evaluasi kegiatan mempunyai rata-rata keseluruhan dari tiap aspek sebesar 4,34 (skala 0-5). Kegiatan pengabdian diharapkan dapat memberikan pengetahuan bagi peternak kelinci sehingga dapat memanfaatkan kulit kelinci menjadi produk yang lebih mempunyai nilai ekonomi yang lebih tinggi.

PENGARUH PAPARAN MICROWAVE TERHADAP DERAJAT IKATAN SILANG PADA VULKANISASI KARET STIRENA BUTADIENA Saputra, Andri; Rahmawati, Atiqa; Arifin, Uma Fadzilia; Agustian, Mertza Fitra
Warta Perkaretan Vol. 43 No. 1 (2024): Volume 43, Nomor 1, Tahun 2024
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.wp.v43i1.978

Vulkanisasi karet diperlukan untuk meningkatkan sifat kekuatan dan elastisitas suatu produk karet. Selain mempersingkat waktu proses, kelebihan vulkanisasi menggunakan radiasi elektromagnetik dari microwave adalah panas yang seragam yang tidak tergantung pada ketebalan produk. Penelitian ini bertujuan mengetahui karakteristik vulkanisasi karet stirena butadiena pada berbagai waktu paparan radiasi microwave. Kompon karet stirena butadiena dimasukkan dalam microwave dan diberi paparan radiasi elektromagnetik menggunakan daya 5 W pada berbagai waktu (10, 30, 50, 60, dan 70 menit). Derajat ikatan silang vulkanisat diuji menggunakan metode Flory-Rehner. Hasil penelitian diketahui bahwa tahap induksi vulkanisasi karet stirena butadiena pada daya 100 W membutuhkan durasi paparan yang lama sekitar 50 menit dengan derajat ikatan silang sebesar 0,52x10-8 mol/cm3. Tren hasil menunjukkan bahwa lama paparan radiasi berbanding lurus dengan nilai derajat ikatan silang karet stirena butadiene. Derajat ikatan silang karet stirena butadiene pada waktu 50, 60, dan 70 menit secara berurutan adalah 0,52x10-8 mol/cm3, 4,65x10-8 mol/cm3, dan 29,41x10-8 mol/cm3. Paparan radiasi elektromagnetik dari microwave di atas menit ke-70 diperkirakan masih dapat menyebabkan terbentuknya ikatan silang antar karet stirena butadiene hingga titik maksimum pada menit tertentu.

Comparison of Pegagan (Centella asiatica (L.)) Extraction with Ultrasound-Assisted Extraction and Microwave-Assisted Extraction Methods Using Response Surface Methodology Rahmawati, Ayu Ulum; Rahmawati, Atiqa
Journal of Biobased Chemicals Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Pegagan (Centella asiatica (L.)) is one of the herbaceous plants that grow, and flowers throughout the year. Pegagan has been used for hundreds of years, especially in the dermatology, and cosmetology industries. Pegagan (Centella asiatica (L.)) has distinctive bioactive components, namely triterpene ester glycoside compounds in the form of asiaticoside, and madecoside as well as triterpene group compounds in the form of asiatic acid, and madecasic acid. There are various extraction methods to produce the following compounds namely, conventional extraction methods, and modern extraction methods. The two methods have differences in the results obtained. Therefore, the difference in the extraction method will determine the result of the difference in the levels of a compound. So that this research was carried out on the effect of Pegagan (Centella asiatica (L.)) extraction using a comparison of the Microwave-Assisted Extraction (MAE), and Ultrasound-Assisted Extraction (UAE) methods on the total phenol content in the Pegagan (Centella asiatica (L.)) extracted. Analysis of the extracteded bioactive content was carried out by analyzing the total phenol content using the Folin-Ciocalteau reagent method and analyzing the data through the Analysis of Response Surface Design expert 11 to see the significance of the research variables. The results obtained from the study are in the form of a comparison of the optimal conditions for the total phenol content, namely, the comparison between the UAE, and MAE methods for Centella asiatica (L.). extracted with ethanol solvent which is more optimal by using the MAE method because in a short time it can produce 1130.7882 mg.

Optimization of Extraction of Bioactive Compound from Pegagan Leaves Using Ethanol Solvent With Microwave-Assisted Extraction Method (MAE) Rohmah, Fira Ulvatur; Rahmawati, Atiqa; Rizkiana, Meta Fitri; Susanti, Ari
Journal of Biobased Chemicals Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Treatment using natural ingredients in Indonesia is the main choice that is growing in society. This is because treatment with natural ingredients has relatively milder side effects compared to synthetic treatment. Therefore, further research is needed on natural ingredients that can be used as natural medicines, one of which is pegagan (Centella asiatica (L.)). Several studies have found bioactive compounds in pegagan that can be used as medicine by various methods. The author wants to know the optimal conditions for extracting pegagan bioactive compounds using the microwave-assisted extraction (MAE) method. This study used pegagan leaf size 40 mesh that had been dried. pegagan leaves were extracted using ethanol as a solvent with microwave power, solvent concentration, and extraction time as variables. Variable power 150 watts, 300 watts, and 450 watts. Variable solvent concentration 25%, 50%, and 75%. Variable extraction time for 5, 10, and 15 minutes. Analysis of the results of the study was carried out using total phenol analysis using the Folin-Ciocalten method. The research data obtained optimum operating conditions at 75% solvent concentration, 450-watt microwave power, and extraction time of 10 minutes with a total phenol content of 1251.410225 mg AGE/g sample.

Study of Histological Skin Structure of Python reticulatus and Varanus salvator Putri, Naimah; Wibowo, Raden Lukas Martindro Satrio Ari; Rahmawati, Atiqa; Jonathan, Sebastian; Tarigan, Deo Steven Barney
Jurnal Sains dan Teknologi Peternakan Vol 5 No 2 (2024): Jurnal Sains dan Teknologi Peternakan
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/jstp.v5i2.3814

Reptile skin is covered with scales that form a protective barrier, making it waterproof and enabling life on land. The present study investigated the histological structure of the skin of the Python reticulatus and Varanus salvator. The samples used were Python reticulatus and Varanus salvator skin taken from the dorsal region. Preparations were made using the hematoxylin eosin (HE) staining method which was carried out at the Microbiology of the leather processing technology, Politeknik ATK Yogyakarta. The results showed that the histological structure of Python reticulatus skin consisted of two layers, epidermis and dermis. The epidermis was composed of stratum corneum, stratum granulosum, and stratum basale. The dermis consists of an outer layer called the stratum laxum (stratum spongiosum) and an inner layer called the stratum compactum. Meanwhile, the histological skin structure of Varanus salvator skin consists of epidermis which included oberhautchen, α-keratin layer, β-keratin layer, supra basale layer, and basale layer. The dermis consists of superficial dermis and deep dermis. There are differences between Python reticulatus skin that is distinguished by its ability to ecydis (skin shedding) the epidermis and Varanus salvator skin have osteoderm (OD) within their dermis layer

Pengembangan Intelligent Leather Inspection Method Berbasis Interpretable Artificial Intelligence Frannita, Eka Legya; Wulandari, Dwi; Putri, Naimah; Rahmawati, Atiqa; Prananda, Alifia Revan
TIN: Terapan Informatika Nusantara Vol 6 No 2 (2025): July 2025
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/tin.v6i2.7425

The Industry 4.0 revolution, characterized by the widespread adoption of artificial intelligence and automation, has fundamentally transformed quality inspection processes in manufacturing sectors. Nevertheless, the leather tanning industry continues to rely on conventional visual inspection methods conducted by human operators, which are inherently susceptible to subjectivity, inter-operator variability, and inconsistent outcomes. This study proposes an integrated deep learning framework utilizing the NasNet-Large architecture combined with Local Interpretable Model-Agnostic Explanations (LIME) to automate objective defect detection and quality classification of pickled leather. The research employs a digital image dataset comprising four distinct leather grade categories, each annotated with expert-validated ground truth labels and professional interpretations. Experimental results demonstrate consistent model performance with 75% accuracy in both training and validation phases while achieving improved testing accuracy of 79%. LIME-based interpretability analysis reveals significant spatial convergence between model-identified defect regions and expert-annotated ground truth references. These findings indicate that the developed model exhibits remarkable competence in replicating professional leather quality inspection capabilities. The proposed approach not only enhances inspection efficiency by reducing human-dependent errors but also provides transparent decision-making interpretability - a critical requirement for reliable AI implementation in industrial applications. This research contributes to the advancement of explainable AI systems in material quality assessment, offering methodological innovation and practical implementation value for the leather manufacturing sector.

Histological and Chemical Studies of Goat Skin Transformation Processing of Raw Skin into Tanned Leather Rahmawati, Atiqa; Putri, Naimah; Wibowo, Ari
Jurnal Agripet Vol 25, No 1 (2025): Volume 25, No. 1, April 2025
Publisher : Faculty of Agriculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v25i1.43456

Fresh goat skin and skins tanned with different tanning agents were prepared for histological, chemical, and physical analyses. Fresh skin samples were fixed in 10% formalin solution, processed using the paraffin embedding technique, sectioned, and stained with hematoxylin and eosin to determine the histological structure. Samples of goat tanned skin, treated with various tanning agents (chrome, aldehyde, chamois, and vegetable), underwent chemical analysis using Fourier Transform Infrared Spectroscopy (FTIR) followed by physical analyses, including tensile strength, tear strength, thickness, and shrinkage temperature. The results showed that the histological structure of fresh skin consisted of two layers: the epidermis and dermis, while tanned leather only exhibited the dermis layer. The epidermis was removed during the tanning process. FTIR analysis of chrome-tanned leather showed bands at 1633 cm1 (amide I), 1554 cm1 (amide II), and 1240 cm1 (amide III). Aldehyde-tanned leather showed bands at 1651 cm1, 1550 cm1, and 1271 cm1 (amide I, II, and III), while vegetable-tanned leather displayed bands at 1634 cm1 (amide I), 1552 cm1 (amide II), and 1239 cm1 (amide III). Shifts in peak positions, intensity, and the number of signature peaks were observed across the tanning agents (chrome, aldehyde, oil, and vegetable). The use of different tanning agentswet blue, wet white, vegetable-tanned, and chamoisresulted in distinct grain-surface structures, significantly influencing the physical characteristics of the leather.

Influence of Retanning Agents on Physical Characteristics of Snow-White Glove Leather from Goat Skin Yuliatmo, Ragil; Maryati, Tutik; Rahmawati, Atiqa; Adamu, Dahiru J M; Mizan, Al
Buletin Peternakan Vol 48, No 2 (2024): BULETIN PETERNAKAN VOL. 48 (2) MAY 2024
Publisher : Faculty of Animal Science, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21059/buletinpeternak.v48i2.95274

The quality of leather is subject to various elements, such as the specific raw material used, and the processing techniques implemented throughout the production process. Goatskin, renowned for its exceptional softness and durability, is frequently employed in the production of gloves owing to its desired attributes, notably its capacity to produce snow-white gloves. Retanning is an essential step in the leather manufacturing process as it significantly improves the characteristics of the leather. Through an investigation into the impacts of distinct retanning agents on goatskin leather gloves, this research endeavor seeks to offer significant knowledge regarding the most effective retanning procedures that can augment the tactile attributes of snow- white leather gloves. In this study, formaldehyde, alum, chromium, and chromium alum were employed as retanning agents. The retanned leathers were assessed by physical parameters, Principal Component Analysis (PCA), and Fourier Transform Infrared spectroscopy (FTIR), then compared to a commercially available snow-white leather glove. The physical characteristics of chrome alum retanned leather showed a high degree of softness (6.60±0.02 mm), good tear strength (1.530±117 N/cm), and tensile strength (1.500±100 N/cm 2 ). The principal component analysis (PCA) also supported that the properties of chrome alum retanned snow-white glove leather closely resemble commercial leather and the result from this study suggested that all factors notably impact the skin's physical quality, except for thickness. Additionally, the FTIR analysis reveals similar functional groups from the different retanned leathers indicated by comparable peaks and stretching patterns. Therefore, chrome-alum could be a well alternative retanning agent for the production of snow-white glove leather.

Evaluating the Processing of Hides within a Green Industry Framework: Implications for Sustainable Livestock By-product Utilization Amalia, Dian Nur; Fauziah, Qori Nur; Rahmawati, Atiqa; Ajie, Baskoro; Robbika, Fadzkurisma
Jurnal Teknologi Hasil Peternakan Vol 7, No 1 (2026): Maret 2026
Publisher : Unpad Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jthp.v7i1.68739

The leather industry is an important sector in utilizing livestock by-products, contributing to economic value addition and resource efficiency in animal production. However, conventional tanning processes remain a major environmental concern due to the excessive use of hazardous chemicals such as chromium and salt. This review aims to analyze cleaner tanning innovations that support sustainable livestock hide production and explore their potential integration into circular livestock systems. The study was conducted through an extensive literature review of national and international sources focusing on enzymatic tanning, vegetable tanning, and the application of circular bio-economy concepts. The findings indicate that the use of enzymes, plant extracts, and biopolymers can reduce the dependency on toxic chemicals, decrease wastewater load, and improve water and energy efficiency. Integrating these innovations within circular livestock systems enhances the utilization of livestock by-products, including waste conversion into biogas, organic fertilizer, and bio-based tanning materials. Therefore, the development of cleaner tanning technology based on livestock hides is a strategic approach toward establishing a green leather industry that supports sustainable livestock production.

Pelatihan Pengawetan dan Pembuatan Kulit Perkamen untuk Pemanfaatan Kulit Kelinci pada Perkumpulan Peternak Kelinci Bantul Rahmawati, Atiqa; Ajie, Baskoro; Wibowo, R. Lukas Martindro Satrio Ari; Yuliatmo, Ragil; Wulandari, Dwi; Abdullah, Sofwan Siddiq; Darmawati, Entien
PRIMA: Journal of Community Empowering and Services Vol 6, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/prima.v6i2.64293

Training on Preservation and Parchment Skins Making for Utilization of Rabbit Skins at Bantul Rabbit Breeders Group. The waste product of rabbit breeders includes rabbit skin. Most rabbit breeders require assistance in processing and utilizing rabbit skin waste. This activity aims to help rabbit breeders get more skilled at recognizing the potential of rabbit skins and developing products from them. Due to this, rabbit skin may have a higher commercial worth. The method used in this activity is participatory counseling, which involves the participants directly in the training activities. The activity is accomplished in three steps: collaboration with the rabbit breeders' group and the neighborhood's head; implementation of the rabbit breeders' training program; and evaluation. The activity results showed that the participants were enthusiastic, interested and provided favorable comments throughout the program. The evaluation results have shown that the instructors scored 85,62 on a scale of 0 to 100 for their performance. This condition shows that the participants can well receive the delivery of material by the instructor. In the evaluation of the organizers as a whole, they got an average of 4.05 (scale 0–5). The results of the average pretest and posttest scores increased from 68 to 77, or around 13.24% of the value. The materials provided throughout training are helpful for rabbit breeders in terms of maintaining rabbit skin and employing rabbit skin in the production of parchment skin.

Co-Authors Abdullah, Sofwan Siddiq Adamu, Dahiru J M Adetya, Nais Pinta Agustian, Mertza Fitra Ajie, Baskoro Alifia Revan Prananda AMALIA, DIAN NUR Ari Susanti Ari Wibowo Asfan, Muhammad Darmawati, Entien Dwi Wulandari Eka Legya Frannita Fauziah, Qori Nur Heru Budi Susanto, Heru Budi Jonathan, Sebastian Lubis, Dina Mariana Uli Maryati, Tutik Meta Fitri Rizkiana Mizan, Al Nurwantoro Putri, Naimah R. Lukas Martindro Satrio Ari Wibowo, R. Lukas Martindro Satrio Ari Rahmawati, Ayu Ulum Robbika, Fadzkurisma Rohmah, Fira Ulvatur RR. Ella Evrita Hestiandari Tarigan, Deo Steven Barney Ukhdiyati, Mustafidah Uma Fadzilia Arifin, Uma Fadzilia Wibowo, Raden Lukas Martindro Satrio Ari Yuliatmo, Ragil

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