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Analisis Fenol Total Teh Hijau Komersial (Camellia sinensis L) Bayani, Faizul; Mujaddid, Jamilul
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Teh (Camellia sinensis L) berpotensi besar sebagai obat dan pengawet bahan pangan karena mengandung zat antioksidan yaitu katekin dan tannin. Kedua senyawa ini merupakan derivat dari flavonoid serta telah dikenal sebagai fenol. Penelitian ini bertujuan untuk mengetahui ada tidaknya fenol dalam produk komersial teh hijau serta mengukur kadar fenol totalnya menggunakan spektofotometer UV-Vis. Sampel yang digunakan adalah 5 macam produk komersial teh hijau yakni (1) Sampel A ; (2) Sampel B ; (3) Sampel C ; (4) Sampel D ; dan (5) Sampel E. Sampel ini diambil secara acak (random) dari berbagai jenis teh hijau produk komersial yang ada di kota Mataram. Berdasarkan hasil penelitian, rata-rata kadar fenol total dari kelima jenis produk teh hijau berturut-turut adalah 4,618 gr/kg; 4,600 gr/kg; 5,012; 4,906; 4,408. Hasil uji statistik dengan ANAVA satu arah menunjukkan bahwa kadar fenol total dari kelima jenis produk teh tersebut tidak berbeda nyata pada α = 5%, yang ditunjukkan oleh Fhitung = 2,943 yang lebih kecil dari Ftabel (5%) = 3,48. Hal ini disebabkan oleh proses pengolahan teh hijau secara umum relatif sama di setiap perusahaan dan varietas teh yang digunakan sebagai produk juga sama yaitu varietas Assamica.

ANALISIS FENOL TOTAL DAN UJI AKTIVITAS ANTIOKSIDAN DARI EKSTRAK BUAH SENTUL(Sandoricum koetjape Merr) Bayani, Faizul
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 1 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Sentul fruit (Sandoricum koetjape Merr.) is representing one kind of fruit that is amount enough abundance at West Nusa Tenggara, but it hasn’t been exploited in an optimal fashion and more castaway useless. Parts of sentul plant have been applied as traditional medicine. Sentul fruit can be oxidated by browning reaction when it is pared or sliced, these symptoms shown the existences of phenolic compounds so that very potential as antioxidant. To analyse total phenolic and antioxidant activity of methanol extract of sentul fruit, the Folin-Ciocalteu and DPPH methods have been used. Results of analysis for three treatment types of sampels ( A, B, and C) shown their total phenolic: 6,9 %, 12,86 %, and 9,36 % respectively and also their antioxidant activity shown by values of IC50 of eachs: 43,36 ppm (1/IC50 = 0,023 ppm-1); 40,53 ppm (1/IC50 = 0,025 ppm-1); and 44,43 ppm (1/IC50 = 0,0225 ppm-1) respectively. These results indicated that sentul fruit is very potensial as antioxidant.

Analisis Fenol Total Teh Hijau Komersial (Camellia sinensis L) Faizul Bayani; Jamilul Mujaddid
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Teh (Camellia sinensis L) berpotensi besar sebagai obat dan pengawet bahan pangan karena mengandung zat antioksidan yaitu katekin dan tannin. Kedua senyawa ini merupakan derivat dari flavonoid serta telah dikenal sebagai fenol. Penelitian ini bertujuan untuk mengetahui ada tidaknya fenol dalam produk komersial teh hijau serta mengukur kadar fenol totalnya menggunakan spektofotometer UV-Vis. Sampel yang digunakan adalah 5 macam produk komersial teh hijau yakni (1) Sampel A ; (2) Sampel B ; (3) Sampel C ; (4) Sampel D ; dan (5) Sampel E. Sampel ini diambil secara acak (random) dari berbagai jenis teh hijau produk komersial yang ada di kota Mataram. Berdasarkan hasil penelitian, rata-rata kadar fenol total dari kelima jenis produk teh hijau berturut-turut adalah 4,618 gr/kg; 4,600 gr/kg; 5,012; 4,906; 4,408. Hasil uji statistik dengan ANAVA satu arah menunjukkan bahwa kadar fenol total dari kelima jenis produk teh tersebut tidak berbeda nyata pada α = 5%, yang ditunjukkan oleh Fhitung = 2,943 yang lebih kecil dari Ftabel (5%) = 3,48. Hal ini disebabkan oleh proses pengolahan teh hijau secara umum relatif sama di setiap perusahaan dan varietas teh yang digunakan sebagai produk juga sama yaitu varietas Assamica.

ANALISIS FENOL TOTAL DAN UJI AKTIVITAS ANTIOKSIDAN DARI EKSTRAK BUAH SENTUL(Sandoricum koetjape Merr) Faizul Bayani
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 1 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Sentul fruit (Sandoricum koetjape Merr.) is representing one kind of fruit that is amount enough abundance at West Nusa Tenggara, but it hasn’t been exploited in an optimal fashion and more castaway useless. Parts of sentul plant have been applied as traditional medicine. Sentul fruit can be oxidated by browning reaction when it is pared or sliced, these symptoms shown the existences of phenolic compounds so that very potential as antioxidant. To analyse total phenolic and antioxidant activity of methanol extract of sentul fruit, the Folin-Ciocalteu and DPPH methods have been used. Results of analysis for three treatment types of sampels ( A, B, and C) shown their total phenolic: 6,9 %, 12,86 %, and 9,36 % respectively and also their antioxidant activity shown by values of IC50 of eachs: 43,36 ppm (1/IC50 = 0,023 ppm-1); 40,53 ppm (1/IC50 = 0,025 ppm-1); and 44,43 ppm (1/IC50 = 0,0225 ppm-1) respectively. These results indicated that sentul fruit is very potensial as antioxidant.

Evaluasi Waktu Tunggu Pelayanan Resep Obat Racikan dan Non Racikan pada Pasien Rawat Jalan di Apotek Depi Yuliana; Faizul Bayani; Dedent Eka Bimmaharyanto; Lelie Amalia Tusshaleha; Syamsul Rahmat; Meilynda Pomeistia; Recta Olivia Umboro
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 2 (2021): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v9i2.4950

The quality of health services is still not optimal, especially in terms of patient dissatisfaction with drug services at pharmacies. A more efficient system can be built only if the waiting time evaluation has been carried out at pharmacies that provide drug prescriptions for patients. This study aims to evaluate the waiting time for prescription services at pharmacies to achieve patient satisfaction with drug services at pharmacies. In this study, Angkasa Farma's pharmacy became the subject of evaluation. The study was conducted with an observational design using descriptive analysis. The waiting time data obtained were then analyzed descriptively and compared with the minimum service standard of waiting time, this is for two types of drugs (prepared drugs and compound drugs). The results of the study based on a sample of 100 recipes and 100 non-concoction recipes are the number of recipes that meet the standards for prescription recipes as many as 37 recipes and for non-concoction recipes as many as 95 recipes. The average waiting time for concoction recipe services is 41.47 minutes and the average waiting time for non-concoction prescription services is 21.29 minutes. The average waiting time for non-concoction prescription services has met the standard, while the waiting time for blended prescription services has not met the standards according to the Regulation of the Minister of Health of the Republic of Indonesia.

Problem-Based Learning in Phytochemistry Courses: Its’ Effectiveness in Improving Medical Students’ Critical Thinking Ability Viewed from Cognitive Style Menap Menap; Faizul Bayani; Saiful Prayogi
Jurnal Penelitian Pendidikan IPA Vol. 7 No. SpecialIssue (2021): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7iSpecialIssue.1124

The implementation of the Problem-Based Learning (PBL) model for medical students has long been initiated to be integrated into the learning system and curriculum, however, empirical support for the application of the PBL model to medical students is still weak, becoming an obstacle. On the one hand, the need for critical thinking development among medical students is increasingly urgent, this is related to their future assignments in a more complex health care system that requires critical thinking ability. Our current study aims to evaluate the effectiveness of the problem-based learning (PBL) model on improving the critical thinking ability of medical students in terms of cognitive style. This study is an experimental study (one group pretest-posttest design) involving 21 medical students (medical students') in phytochemistry courses at one of the universities providing medical and nursing science programs in Indonesia. The study started by giving a cognitive style test using the GEFT (Group Embedded Figure Test) instrument to classify students into FD and FI cognitive styles, pretest, learning implementation using the PBL model (carried out for five meetings), and posttest. The pretest and posttest used a critical thinking ability test instrument in the form of an essay test. Descriptive and statistical analyzes were performed to evaluate the effectiveness of the PBL model. The results of the study show that the PBL model has been convincingly effective in improving students' critical thinking ability in phytochemistry courses for both FD/FI cognitive style modes. Based on these findings, we recommend the use of the PBL model in extensive and intensive learning to develop the critical thinking ability of medical students

Phytochemical Identification of Ethanol Extract of Mahkota Dewa Fruit Flesh (Phaleria macrocarpa [Scheff]) as Antidiabetic Depi Yuliana; Faizul Bayani; Dwi Monika Ningrum; Neneng Rachmalia Izzatul Mukhlishah
SainsTech Innovation Journal Vol. 3 No. 1 (2020): SIJ Volume 3 Nomor 1 Mei 2020
Publisher : LPPM Universitas Qamarul Huda Badaruddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (458.116 KB)

Diabetes mellitus (DM) is one of the biggest disease problems in the world. World Health Organization (WHO) as many as 346 billion people in the world are indicated to have DM. Phaleria macrocarpa [Scheff] Boerl as a native Indonesian medicine is widely used in traditional medicine as an effective medicine against DM, cancer, gout, high cholesterol, and kidney disorders. Phaleria macrocarpa [Scheff] Boerl has saponins and tannins which play a role in reducing blood glucose levels. This study aims to identify the metabolite compounds of Phaleria macrocarpa [Scheff] Boerl extract that have the potential to be anti-diabetic. The research using the TLC method. The results of TLC showed that Phaleria macrocarpa [Scheff] Boerl extract has flavonoids, alkaloids, saponins and tannins.

Isolation and Characterization of the Bioactive Compound of Piperine in Black Pepper (Piper nigrum L.) Nora Listantia; Faizul Bayani
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 9, No 2: December 2021
Publisher : IKIP Mataram

One of the most famous spice species that lives in the tropics is black pepper (Piper nigrum L.). The study of piperine paved the way for its development as a bioactive compound in the treatment of various diseases, this is based on the ancient healing tradition of using black pepper. Our current study aims to isolate and characterize the bioactive compound piperine in Piper nigrum L. Black pepper was extracted with ethanol using the basic soxhletation and percolation methods. The results in the study showed that the extract from the Sokhlet process was yellowish moss green, and the piperine crystal color was yellow and shaped like a needle. Thin layer chromatography (TLC) results were observed using a UV-Vis spectrophotometer with different eluents and different Rf values were obtained. In addition, observations on the IR spectrum show that the piperine structure has been formed. This study provides an opportunity for a more in-depth exploration of the structure of piperine and future studies are very important to identify the potential utilization of piperine, especially as a basic material in the treatment of various diseases.

Uji Aktivitas Antioksidan dari Ekstrak Buah Sentul (Sandoricum koetjape Merr.) Faizul Bayani
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 4, No 2: December 2016
Publisher : IKIP Mataram

Sentul fruit (Sandoricum koetjape Merr.) is representing one kind of fruit that is amount enough abundance at West Nusa Tenggara, but it hasn’t been exploited in an optimal fashion and more castaway useless. Parts of Sentul plant have been applied as traditional medicine. Sentul fruit can be oxidated by the browning reaction when it is pared or sliced, these symptoms showed the existences of phenolic compounds so that very potential as an antioxidant. To analyze the total phenolic and antioxidant activity of methanol extract of Sentul fruit, the Folin-Ciocalteu and DPPH methods have been used. Results of analysis for three treatment types of samples ( A, B, and C) shown their total phenolic: 6,9 %, 12,86 %, and 9,36 % respectively and also their antioxidant activity shown by values of IC50 of each: 43,36 ppm (1/IC50 = 0,023 ppm-1); 40,53 ppm (1/IC50 = 0,025 ppm-1); and 44,43 ppm (1/IC50 = 0,0225 ppm-1) respectively. These results indicated that Sentul fruit is very potential as an antioxidant.

PENERAPAN PENDEKATAN SIKLUS BELAJAR (LEARNING CYCLE) BERORIENTASI KOOPERATIF UNTUK MENINGKATKAN HASIL BELAJAR Faizul Bayani; Ida Wahyuni
Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Vol 3, No 1: June 2015
Publisher : IKIP Mataram

This action research aims to improve student outcomes and learning processes. The population of this research was 32 grade X Gunungsari Vocational High School students, amounting to 32 people on the subject of atomic structure and periodic elements. The study was designed in three cycles and adjusted to the stages of Classroom Action Research (CAR). Instrument testing includes power test difference, level of difficulty and reliability. The results for cognitive aspects measured by the test increased from cycle 1 (77.42%) to cycle 2 (87.50%) but decreased in cycle 3 (56.25%), while affective aspects were measured by attitude questionnaires shows the average attitudes/responses of students in the good category and psychomotor aspects as measured by performance tests provide learning completeness of 100% with an average of 84.18. For the results of observations the teaching and learning process states that the activities of students are in the category of being quite active in cycle 1, active in cycle 2, and very active in cycle 3. Activity of teachers is in the very active category for all three cycles. Based on this data, it can be concluded that the implementation of cooperative oriented learning cycle approaches has a positive effect on the results and learning process of class X students at SMK 1 Gunungsari on the subject of atomic structure and periodic elements.

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