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All Journal Jurnal Ilmiah WUNY Science and Technology Indonesia Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) Borobudur Pharmacy Review Journal of Local Therapy
Achmad Ridlo
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health

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Meningkatkan Kemampuan Kognitif Anak Usia 9-12 Tahun melalui Permainan Catur. Achmad Ridlo
Jurnal Ilmiah WUNY Majalah WUNY XVI Nomor 3, September 2014
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jwuny.v16i3.2962

Abstract

Kemajuan teknologi sangat mendukung terhadap perkembangan peradaban manusia terutama dalam peningkatan intelektualitas. Tidak semua teknologi tercanggih dapat membantu menstimulasi, meningkatkan, dan mengembangkan seluruh aspek kemampuan manusia. Kita tentu harus memikirkan generasi penerus, bagaimana kita membantu meningkatkan, dan mengembangkan kemampuan mereka terutama untuk anak Sekolah Dasar Usia 9-12 yang berada pada masa Kanak-Kanak akhir. Pada umumnya, anak usia 9-12 tahun duduk di kelas 4,5 dan 6 Sekolah Dasar (SD). Anak usia 9-12 tahun biasanya mempunyai ciri-ciri yang khas yaitu perhatiannya tertuju pada kehidupan praktis sehari-hari; rasa ingin tahu yang tinggi, ingin belajar dan realistik; timbul minat-minat pada pelajaran-pelajaran khusus; anak memandang nilai sebagai ukuran yang tepat mengenai prestasi belajarnya di sekolah dan suka membentuk kelompok sebaya atau peergroup untuk bermain bersama dengan membuat peraturan sendiri dalam kelompoknya. Anak pada usia 9-12 tahun ini termasuk pada tahap operasional konkrit menurut Jean Piaget dalam Rita Eka Izzaty (2008 :104).
Uji stabilitas fisik formulasi sediaan sirup infusa daun seledri (Apium graveolens L.) dengan larutan pemanis daun stevia (Stevia rebaudiana) Dewi, Indri Kusuma; Alif, Salsa Billa Nur; Ridlo, Achmad
Borobudur Pharmacy Review Vol 4 No 1 (2024): January- June
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/bphr.v4i1.11565

Abstract

One of the cardiovascular diseases is commonly known as hypertension, which is high blood pressure. It is recognized as a cause of death and is often referred to as the "silent killer." This is because hypertension frequently occurs without symptoms and is only detected after it has caused serious damage to the body. Many hypertension sufferers utilize traditional therapies, one of which is the use of celery plants (Apium graveolens L.). Utilization of celery planted could have been made into a syrup that used natural sweetener content, namely natural sweetener stevia left (Stevia rebaudiana). This research aims to determine the effect of storage time on the results of the stability test of celery leaf syrup preparations with stevia leaf sweetener using the cycled tested method which carried out as many as 6 cycles with temperatures of 4oC and 40oC each for 24 hours by testing parameters included organoleptic, pH, viscosity, clarity and homogeneity. This type of research uses experimental research. The results of the stability of celery leaf infusion syrup preparation (Apium graviolens L.) obtained by the organoleptic test were liquid, had a distinctive celery smell and were yellowish green in color. Celery syrup preparation is homogeneous and cleared during storage, the pH test stability results had an average value of 5.27 and a viscosity of 3.8 cP. The results of the stability tests for organoleptic properties, homogeneity, clarity, pH, and viscosity indicate that no significant differences were found between the cycles, meaning the syrup remains stable during storage
Synthesis and Characterization of Isopropylidene Glycerol Acetate and Isopropylidene Glycerol Propanoate Compounds Ridlo, Achmad; Choirunnisa, Lutfia; Rahmawati, Fani; Irunsah, Aslan; Ishartono, Bayu
Indonesian Journal of Chemical Studies Vol. 2 No. 2 (2023): Indones. J. Chem. Stud., December 2023
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v2i2.30

Abstract

Isopropylidene Glycerol Acetate (IGA) and Isopropylidene Glycerol Propanoate (IGP) as ester compounds using acetic and propanoic acids have been synthesized, characterized, and studied for their antibacterial properties. The IGA was synthesized from ethyl acetate (EtOAc) and 1,2-O-isopropyliden glycerol (IPG) with a mole ratio of 1:8 through a transesterification reaction. Meanwhile, the IGP was synthesized using ethyl propanoate (EP) with the same ratio and method as IGA. All materials in this study were identified using FT-IR, GC-MS, 1H-NMR, and 13C-NMR. The characterization results indicated that the compounds of EP, IPG, IGA, and IGP had been successfully formed and identified. It was also revealed that the compounds of EP, IPG, IGA, and IGP were successfully synthesized with yields of 37.72, 27.78, 70.11, and 63.83%, respectively. The antibacterial activity test revealed that neither IGA nor IGP inhibited the growth of Staphylococcus aureus or Escherichia coli at concentrations of 62.5; 125; 250; 500; and 1000 ppm. Therefore, it was asserted that ester compounds synthesized with short-chain carboxylic acids, such as propanoic and acetic acids, lacked antibacterial properties.
FORMULATION AND TESTING OF ANTIBACTERIAL ACTIVITY OF FACIAL TONER PREPARATIONS CHINESE BELT LEAF EXTRACT (Peperomia pellucida L. Kunth) AGAINST THE BACTERIA Propionibacterium acnes Nasikin, M. Ali; Ridlo, Achmad; Rakhmayanti, Regia Desty; Hapsari, Azizah Nur
Journal of Local Therapy Vol 3 No 2 (2024): Journal of Local Therapy
Publisher : Pusat Unggulan IPTEK Poltekkes Kemenkes Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31290/jlt.v3i2.4674

Abstract

Abstract: Chinese betel leaf (Peperomia pellucida L.Kunth) is a herbal plant that can be used to treat abscesses, acne, boils and skin inflammation. Chinese betel leaves contain chemical compounds including alkaloids, flavonoids, saponins, tannins and triterpenoids which can inhibit the growth of Propionibacterium acnes bacteria. The Chinese betel leaf extract content can be used as a refreshing toner, especially for dry and acne-prone skin. The aim of this research is to determine the results of physical quality tests and antibacterial activity of Chinese betel leaf extract facial toner formulations with an additional active ingredient concentration of 7.5%; 15% and 30%. This type of research is experimental research with a descriptive research design. The organoleptic test results of the base are clear and odorless, while the other 3 formulas are brownish green in color, have a distinctive aroma of Chinese betel leaf extract and are in liquid form. The homogeneity test results of the preparation are homogeneous. F0 pH test results 6.327; FI 5.344; FII 5,243 and FIII 5,067. Viscosity test results F0 5.32 cps FI 6.34 cps and FII 6.33 cps. The results of the antibacterial activity test F0, FI, FII, and FIII were respectively 0.00 mm, there was no inhibition zone, 7.37 mm, 13.35 mm, 16.24 mm and in the positive control clindamycin it was 21.17 mm. Based on the results of the physical quality test and antibacterial activity of the toner preparation, the toner preparation has met existing quality standards so it is safe to use and the toner preparation with the strongest antibacterial activity is found in FIII.
DETERMINATION OF PHENOL CONTENT AND PHYSICAL TEST OF COMBINED JAMU POWDERRED GINGER (Zingiber officinale Rosc. var. rubrum), KENCUR (Kaempferia galanga L.) AND TURMERIC (Curcuma domestica Val.) Rusita, Youstiana Dwi; Ridlo, Achmad; Nasikin, M. Ali; Wijayanti, Ayu Rizki
Journal of Local Therapy Vol 3 No 2 (2024): Journal of Local Therapy
Publisher : Pusat Unggulan IPTEK Poltekkes Kemenkes Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31290/jlt.v3i2.4673

Abstract

Abstract: Powdered herbs are in the form of fine grains ground from sifted simplicia, blended with different compositions adjusted to the function and benefits of the herb, powdered herbs are consumed by brewing with warm water. This study was to determine the organoleptic physique, pH, moisture content, weight uniformity, and phenol content of herbal medicine powder in combination with red ginger (Zingiber officinale Rosc. var. rubrum), kencur (Kaempferia galanga L.) and turmeric (Curcuma domestica Val.). The method used to measure pH was using a pH meter, the moisture content using the gravimetric method, the phenol level using the foline ciocalteau method with the standard standard of gallic acid. The organoleptic results of herbal powder are in the form of powder, the taste in composition 1 is a bit bitter, in composition 2 the typical bitterness of turmeric is a little spicy, and in composition 3 it is a bit bitter. The pH results of composition 1, 2 and 3 were 5.954, 6.088 and 6.105. The results of the moisture content of composition 1, 2 and 3 were 8.1639, 6.8732 and 8.1042 respectively. The result of the uniformity of the weight of the second composition is 15% red ginger, 40% kencur, 45% turmeric.
Transforming Discarded Mature Coconut Water into Carboxymethyl Cellulose as A Precursor Material for Bioplastics Khusna Santika Rahmasari; Achmad Vandian Nur; Eka Anydia Putri; Vanesa Maharani; Achmad Ridlo; Bayu Ishartono
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.698-711

Abstract

(DMCW) mixture into the market’s drainage ditches after opening mature coconuts, resulting in soil contamination and odor due to acetic acid produced during fermentation by soil bacteria. This study aimed to minimize soil pollution caused by these activities through converting DMCW into versatile biopolymers such as carboxymethyl cellulose (CMC). The synthesis was initiated through the fermentation of DMCW into bacterial cellulose (BC) in the form of nata de coco (NdC), subsequently undergoing alkalization and carboxymethylation to produce CMC. The efficacy of the synthesis process from DMCW to CMC was identified via spectroscopy, thermal, and physicochemical analysis. The characterization results demonstrated that NdC-based CMC and commercial CMC exhibited analogous functional groups, diffraction patterns, thermal degradation behaviors, and physicochemical properties. NdCbased CMC revealed characteristics like water solubility, elevated molecular weight, and high viscosity, despite its purity being spproximately 83.3%. Notwithstanding its rigidity, lack of transparency, and water solubility, this NdC-based CMC can be solvent cast into bioplastics and degraded in soil in four days. In the future, CMC-based bioplastics, enhanced through advanced treatments, will be expected as precursors for the creation of sustainable food packaging materials
Co-Authors Achmad Vandian Nur, Achmad Vandian Alif, Salsa Billa Nur Bayu Ishartono Bayu Ishartono Choirunnisa, Lutfia Eka Anydia Putri Hapsari, Azizah Nur Indri Kusuma Dewi, Indri Kusuma Irunsah, Aslan Khusna Santika Rahmasari Nasikin, M. Ali Rahmawati, Fani Rakhmayanti, Regia Desty Vanesa Maharani Wijayanti, Ayu Rizki Youstiana Dwi Rusita, Youstiana Dwi