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Synthesis and isolation of theaflavin from fresh tea leaves as bioactive ingredient of antioxidant supplements Shabri, Shabri; Maulana, Hilman
Jurnal Penelitian Teh dan Kina Vol 20, No 1 (2017)
Publisher : Research Institute for Tea and Cinchona

Theaflavin (TF) is a product of catechin oxidation that give contribution to golden yellow color, brightness, briskness of black tea and has a potential as natural antioxidant activity. TF has a higher superoxide radical capture rate than EGCG (Epigallocatechin gallate). The study was to synthesize TF components in the form of extracts that have high antioxidants. Materials used in this research is bud+3 leaves from RITC clone (GMB 7). The research were caried out used 15 liters of tea leaves pulp per treatment, fermentation using fermentor with 15 L/min, 20 L/min and 25 L/min airflow treatment, separation of TF from thearubigin (TR) used 2.5% NaHCO3, and isolation of TF from impurity compounds used silica gel column with ethyl acetate/hexane as eluent, and DPPH (1,1-diphenyl-2-picryl hydrazyl) for antioxidant activity. The result showed that TF synthesis of fresh tea leaf catechin at water-air rate of 25 liters/minute could produced TF extract and yield TF purity extract with 1.01% and 39.15% in dry weight respectively after isolation by silica gel column. Antioxidant activity by DPPH from TF extract showed the smallest value of EC50 is 12.16 mg/L at 150 mg dose and its activity increased with the addition of concentration of TF extract.

Efficient Route Planning for Flour Distribution: A Heuristic Approach Baisa, Said Muhammad; Imran, Arif; Maulana, Hilman; Afifah, Alif Ulfa
Jurnal Sistem Teknik Industri Vol. 26 No. 2 (2024): JSTI Volume 26 Number 2 July 2024
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v26i2.17223

This company operates in the Food and Beverage sector, selling Martabak, an Indonesian snack. The company needs to deliver flour to 25 branches spread across Bandung, Indonesia, every day, with varying demand capacities at each branch. Each day, the total amount of flour to be delivered is 377 boxes. Currently, the company has 12 distribution routes with a total distance of 271,16 km, with each route covering only two stores. However, these routes are too many and vehicle capacities need to be optimized, resulting in a high total travelled distance. The aim of this research is to optimize the delivery routes to reduce the total travelled distance and number of routes. To address this issue, known as the Vehicle Routing Problem (VRP), heuristic methods were employed, specifically the nearest neighbour method for initial route construction and Intra-Route (1-0) Insertion for improvement. Implementing these heuristic methods resulted in a final total of 6 distribution routes with a total distance of 160,90 km. This method successfully reduced the total travelled distance by 110,26 km and reduced the number of routes by 6. In conclusion, the application of heuristic methods in solving the VRP for this company proved to be effective in reducing both the total travelled distance and the number of routes, thereby enhancing the operational efficiency of the delivery process.

Stabilitas Parameter Kualitas 35 Klon Teh Sinensis (Camellia Sinensis var. Sinensis) Yang Diolah Menjadi Teh Hijau Dengan Metode Panning dan Steaming Prayoga, M. Khais; Syahrian, Heri; Rahadi, Vitria Puspitasari; Maulana, Hilman; Shabri, Shabri; Akhdya, Alina; Martono, Budi; Santoso, Tri Joko; Utami, Dwinita Wikan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 7 No 2 (2023): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v7i2.505

The Research Institute for Tea and Cinchona (RITC) has a collection of 35 tea clones of the Sinensis type whose performance parameters for green tea are unknown, so it is necessary to screen these clones as an effort to characterize the performance parameters for green tea quality. The purpose of this study was to determine the clones with stable quality parameter performance in two processing methods namely panning and steaming as well as the suitability of each clone with the processing method. The diversity of green tea quality parameter performance was analyzed using principal component analysis (PCA). The stability of the green tea quality parameters was tested using the Finaly-Wilkinson method, while the differences in the performance of the green tea quality parameters in the panning and steaming methods were analyzed using combined variance followed by an additional Honest Significant Difference (BNJ) test at the 5% level. The results of this study were clones I.1.101, I.2.34, I.2.85, II.1.3, II.1.60, R1, S2, GMBS 3, and GMBS 4 which had stable green tea quality in two processing methods, namely panning and steaming. . Meanwhile clones I.2.34, I.4.113, II.2.146, II.3.16, R3, S1, S3, and GMBS 3 will show good quality green tea when processed using the panning method, while clones I.1.93, II.2.108 , II.4.32, II.4.178, SGMBA, and Yabukita will show good quality green tea when processed using the steaming method.

EFIKASI INSEKTISIDA BERBAHAN AKTIF BUPROFEZIN TERHADAP Empoasca sp. DI PERKEBUNAN TEH Fauziah, Fani; Maulana, Hilman
CREATIVE RESEARCH JOURNAL Vol 4 No 02 (2018): Creative Research Journal
Publisher : Badan Penelitian dan Pengembangan Daerah Provinsi Jawa Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34147/crj.v4i02.169

Empoasca merupakan salah satu hama utama di perkebunan teh yang dapat menimbulkan kerusakan hingga 50%. Penelitian ini bertujuan untuk menguji insektisida berbahan aktif Buprozein. Penelitian dilaksanakan di Kebun Percobaan Gambung, Kabupaten Bandung dari bulan Maret 2017 hingga Mei 2017. Pengujian dilaksanakan dengan metode percobaan dengan menggunakan Rancangan Acak Kelompok (RAK) dengan lima perlakuan dan lima ulangan. Perlakuan yang diuji meliputi insektisida Buprofezin 100 g/l dengan dosis 0,125; 0,25; 0,375; 0,5 l/ha, dan kontrol. Insektisida disemprotkan dengan menggunakan alat semprot punggung semi automatis sehari setelah pemetikan, volume semprot 400 l/ha, sebanyak 6 kali, dengan interval aplikasi 1 minggu. Parameter yang diamati meliputi intensitas serangan, populasi Empoasca sp., produksi pucuk, suhu dan curah hujan. Hasil pengujian menunjukkan bahwa insektisida Buprofezin 100 g/l pada semua dosis yang diuji berpengaruh terhadap intensitas dan populasi Empoasca sp. Hasil pengamatan menunjukkan bahwa tingkat efikasi tertinggi ditunjukkan oleh dosis formulasi 0,375 dan 0,5 l/ha dengan tingkat efikasi lebih dari 70%

Upaya Peningkatan Partisipasi Pemuda Desa Parigi pada Kegiatan Keagamaan “Ngopi” (Ngobrol Perkara Iman) di Desa Parigi Ardiansah, Dian; Melati, Elita Putri; Aryanti, Sasty; Nurfadilah, Nada; Maulana, Hilman
Irajagaddhita Vol. 2 No. 2 (2024): Irajagaddhita : Jurnal Pengabdian dan Pemberdayaan Masyarakat
Publisher : CV Global Research Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59996/irajagaddhita.v2i2.609

Partisipasi pemuda dalam kegiatan keagamaan di Desa Parigi mengalami penurunan, yang menjadi latar belakang penelitian ini. Kegiatan keagamaan dianggap penting dalam membentuk karakter dan identitas spiritual generasi muda. Tujuan dari kegiatan ini adalah untuk meningkatkan partisipasi pemuda pemudi dalam kegiatan keagamaan melalui program Ngopi (ngobrol perkara iman), yang menggabungkan diskusi santai dengan nilai-nilai agama. Metode yang digunakan adalah pendekatan partisipatif dengan melibatkan pemuda dalam perencanaan dan pelaksanaan kegiatan. Selain itu, dilakukan observasi dan wawancara untuk mengumpulkan data tentang pandangan pemuda terhadap kegiatan keagamaan. Hasil menunjukkan adanya peningkatan signifikan dalam partisipasi pemuda dalam kegiatan keagamaan setelah mengikuti program Ngopi, dengan meningkatnya minat dan kesadaran mereka terhadap nilai-nilai keagamaan. Kesimpulan dari penelitian ini adalah bahwa pendekatan informal seperti Ngopi dapat efektif dalam menarik minat pemuda untuk berpartisipasi dalam kegiatan keagamaan, sehingga diharapkan dapat diterapkan secara lebih luas untuk meningkatkan keterlibatan generasi muda dalam konteks keagamaan di desa lainnya.

Pengaruh Lama Waktu Steaming dan Tiris terhadap Warna Seduhan Teh Hijau dengan Variasi Media Penyeduh Octavian, Diva; Ngatirah; Maulana, Hilman
BIOFOODTECH : Journal of Bioenergy and Food Technology Vol. 3 No. 2 (2024): Desember
Publisher : Program Studi Teknologi Hasil Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/biofoodtech.v3i2.1456

There were two methods of green tea processing, namely the panning method and the steaming method. The panning method often produces unstable quality of tea because temperature and pressure of the heat on the process are not evenly distributed, so that green tea becomes burnt, or the polyphenol oxidase enzyme not inactivated as well. Therefore, green tea processing was developed using the steaming method. This research aimed to determine the effect of steaming time and draining time on the color of green tea brewed water with different brewing media. This study used the Randomized Complete Complete Block Design (RCBD) method with 2 factors. The first factor is length of steaming time with 3 levels, there are 2 minutes, 3,5 minutes and 5 minutes. The second factor is length of draining time with 3 levels, 0 hours, 2 hours and 4 hours. The results showed that steaming time had a significant effect on the G, B, L* and ∆E values of the brewed water color with Le Minerale. However, it didn’t significantly affect the R value with Le Minerale, the R, G, B, L* and ∆E values with distilled water and Gambung water. The draining time significantly affected the R, G, B, L* and ∆E values of the brewed water color with Le Minerale, as well as the G, L* and ∆E values with Gambung water. However, it did not significantly affect the R, G, B, L* and ∆E values with distilled water, the R and B values with Gambung water.

Financial literacy and economic uncertainty: impact on sme financial performance in cirebon regency Maulana, Hilman; Yuniarto, Rival Fahara; Maiyaliza, Maiyaliza
Jurnal Mantik Vol. 9 No. 2 (2025): August: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.v8i6.6468

Economic uncertainty is a major challenge for Small and Medium Enterprises (SMEs) in maintaining financial stability and business sustainability. This study aims to analyze the impact of economic uncertainty on the financial performance of SMEs in Cirebon Regency and assess the role of financial literacy in moderating the relationship. A quantitative method was used in this study with a data collection technique through a questionnaire distributed to 100 SME owners. Data analysis was carried out using descriptive statistics and multiple linear regression with the help of SPSS software. The results show that economic uncertainty has a negative and significant effect on the financial performance of SMEs, with a regression coefficient value of -0.376 (p = 0.000). Meanwhile, financial literacy has a positive influence on the financial performance of SMEs, with a regression coefficient of 0.482 (p = 0.000). The regression model used explains the 37.5% variation in SME financial performance, which shows that other factors also contribute to SME financial performance. Thus, this study confirms that increasing financial literacy can be an effective mitigation strategy for SMEs in the face of economic uncertainty. The implications of this study lead to the importance of financial education for SME owners to improve their ability to manage their finances and anticipate unexpected economic changes. In addition, this study also provides recommendations for the government and financial institutions to develop training programs and access to more flexible financing for SMEs so that they are more resilient in facing economic challenges.

Stabilitas Parameter Kualitas 35 Klon Teh Sinensis (Camellia Sinensis var. Sinensis) Yang Diolah Menjadi Teh Hijau Dengan Metode Panning dan Steaming Prayoga, M. Khais; Syahrian, Heri; Rahadi, Vitria Puspitasari; Maulana, Hilman; Shabri, Shabri; Akhdya, Alina; Martono, Budi; Santoso, Tri Joko; Utami, Dwinita Wikan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 7 No 2 (2023): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v7i2.505

The Research Institute for Tea and Cinchona (RITC) has a collection of 35 tea clones of the Sinensis type whose performance parameters for green tea are unknown, so it is necessary to screen these clones as an effort to characterize the performance parameters for green tea quality. The purpose of this study was to determine the clones with stable quality parameter performance in two processing methods namely panning and steaming as well as the suitability of each clone with the processing method. The diversity of green tea quality parameter performance was analyzed using principal component analysis (PCA). The stability of the green tea quality parameters was tested using the Finaly-Wilkinson method, while the differences in the performance of the green tea quality parameters in the panning and steaming methods were analyzed using combined variance followed by an additional Honest Significant Difference (BNJ) test at the 5% level. The results of this study were clones I.1.101, I.2.34, I.2.85, II.1.3, II.1.60, R1, S2, GMBS 3, and GMBS 4 which had stable green tea quality in two processing methods, namely panning and steaming. . Meanwhile clones I.2.34, I.4.113, II.2.146, II.3.16, R3, S1, S3, and GMBS 3 will show good quality green tea when processed using the panning method, while clones I.1.93, II.2.108 , II.4.32, II.4.178, SGMBA, and Yabukita will show good quality green tea when processed using the steaming method.

ANALISIS TINGKAT PARTISIPASI DALAM PENGELOLAAN EKOWISATA ( Suatu Kasus pada Obyek Wisata di Desa Gununglarang Kecamatan Bantarujeg Kabupaten Majalengka ) Sulaksana, Jaka; dinar, dinar; Maulana, Hilman
Paradigma Agribisnis Vol 2 No 1 (2019): paradigma agribisnis
Publisher : lembaga penelitian universitas swadaya gunung jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jpa.v2i1.2235

Penelitian ini dilaksanakan di Desa Gununglarang KecamatanÂ Bantarujeg Kabupaten Majalengka pada obyek wisata Pasir Ole-Ole mulai bulan Mei-September 2018. Tujuan penelitian ini adalah untuk mengetahui, bagaimana gambaran tingkat partisipasi masyarakat dan untuk mengetahui pengaruh partisipasi terhadap kesejahteraan masyarakat. Metode yang digunakan yaitu deskriptifÂ kuantitatif dengan teknik penentuan responden menggunakan Purposive Sampling yaitu total sampel 42 orang, terdiri dari penjaga spot, penjaga karcis, parkir, dan pedagang. Teknik analisis yang digunakan dalam penelitian ini adalah deskriptif dan Regresi Linear Sederhana menggunakan aplikasi SPSS 20. Hasil penelitian menunjukkan Tingkat partisipasi masyarakat dalam pengelolaan ekowsiata pasir ole-ole termasuk kategori baik, seperti kontribusi, pengorganisasian dan pemberdayaan wisata misalnya penjagaan obyek wisata, pembuatan toilet dan pembaharuan spot foto. Partisipasi masyarakat berpengaruh terhadap kesejahteraan masyarakat dengan hasil 17,8% dan sisanya di pengaruhi oleh faktor lain yang tidak diteliti dalam penelitian ini.Kata Kunci Â Â Â Â : Partisipasi masyarakat, Ekowisata, Kesejahteraan

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