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All Journal Cakrawala Pendidikan Jurnal Penelitian Saintek Jurnal Penelitian Humaniora Jurnal Sains Dasar Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Jurnal Riset Pendidikan Kimia (JRPK) Indonesian Journal of Chemistry and Environment Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia

Cornelia Budimarwanti

Universitas Negeri Yogyakarta

Author-ID : 3606706

Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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FEROMON DAN METILEUGENOL, PENGENDALI HAMA TANPA MERUSAK LINGKUNGAN Cornelia Budimarwanti
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN, EDISI 1,1997,TH.XVI
Publisher : LPMPP Universitas Negeri Yogyakarta

mensejahterakan umat manusia di masa yang akan datang. Untuk tujuan tersebutmaka penggunaan bahan-bahan kimia dalam kehidupan sehari-hari harusdipertimbangkan dampaknya pada lingkungan hidup, khususnya pada manusia.Pestisida memegang peranan penting dalam penyediaan bahan pangan bagiumat manusia, tetapi di sisi lain penggunaan pestisida menimbulkan masalah yang cukupserius. Penggunaan pestisida cenderung merusak kesetimbangan alam, sepertipenggunaan pest~~ida klorohidrokarbon sebagai pembunuh serangga perusak tanamansayur-sayuran, pestisida ini dalam jangka beberapa tahun akan tertinggal di dalamlingkungan (air dan tanah). karena pestisida ini tidak dapat terdegradasi secara biologis.Di samping itu penggunaan pestisida secara langsung atau tidak langsung dapatmengakibatkan bahan pangan terkontaminasi oIeh residu pestisida yang ditinggalkan.Apabila bahan pangan tersebut dikonsumsi oleh manusia maka pestisida akan masuk kedalam jaringan tubuh. Diperkirakan di dalam jaringan tubuh manusia terdapal residupestisida 5 ppm sampai 10 ppm. bahkan lebih fatal lagi pestisida dapat mencemari airsusu ibu.Feromon dan metileugenol merupakan zat kimia yang menarik untuk dipelajarikarena dapat mengendalikan hama tanaman tanpa mengganggu kesetimbanganlingkungan.

ZAT WARNA BERBAHAYA PADA PRODUK MAKANAN DAN MINUMAN Cornelia Budimarwanti
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN, EDISI 2,1992,TH.XII
Publisher : LPMPP Universitas Negeri Yogyakarta

War~a telah menjadi suatu bagian yang berpengaruhdalam produk makanan dan minuman. Warna pada makanandan minuman sangat mempengaruhi selera seseorang, danmempunyai peran penting karena berpengaruh terhadappenerimaan oleh konsumen. Konsumen akan cenderung menerimamakanan olahan yang mempunyai warna s{~suai denganwarna alami, maka pihak produsen berusaha menarik selerakonsumen dengan pemberian warna pada nl •• kanan danminuman olahan.Dengan meningkatnya kebutuhan akan berbagaj sediaanmakanan dan minuman, maka konsumsi zat warna jugameningkat baik dalam jumlah maupun jenisnya.. Di sampingzat warna alami telah dapat disintesis zat warna buatan.Munculnya zat warna sintetis yang digunakan -pada produkmakanan dan minuman ternyata menimbulkan permasalahantersendiri, yaitu menimbulkan gangguan kesehatan padakonsumen.

THE SYNTHESIS OF CINNAMYL BENZOATE THROUGH ESTERIFICATION REACTION BETWEEN BENZOYL CHLORIDE AND CINNAMYL ALCOHOL REDUCED 96 FROM CINNAMALDEHYDE Maghisya Oktanni; Cornelia - Budimarwanti
Jurnal Penelitian Saintek Vol 21, No 2: Oktober 2016
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study was aimed at synthesizing cinnamyl benzoate through esteriﬁ cation reaction between benzoyl chloride and cinnamyl alcohol reduces from cinnamaldehyde. This study was started by reducing cinnamaldehyde to cinnamyl alcohol using NaBH4 reductor at room temperature. The reduction product of cinnamaldehyde was reacted using benzoyl chloride through esteriﬁ cation reaction using pyridine at room temperature for 4 hours. The product of cinnamaldehyde reduction and esteriﬁ cation reaction were characterized using TLC, IR spectrometer, and GCMS spectrometer.The results show that the reduction of cinnamladehyde produced yellow liquor that contain cinnamyl alcohol contained 81.31% and 63.94% randemen. While the result of esteriﬁ cation reaction between benzoyl chloride and cinnamyl alcohol produced brown liquor that contained cinnamyl benzoate contained 12.44% and 5.78% randemen.

OKSIDASI SENYAWA 1-(3,4-DIMETOKSIFENIL-2-PROPANOL DENGAN PIRIDINIUM KLOROKROMAT Cornelia Budimarwanti
Jurnal Penelitian Humaniora Vol 3, No 3: Oktober 1998
Publisher : LPPM UNY

Abstrak Eugenol merupakan komponen utama penyusun minyak daun cengkeh, kadarnya berkisar antara 80-90%. Eugenol mempunyai beberapa gugus fungsional, yaitu gugus olefin atau alil, fenol, dan eter. Dengan adanya gugus-gugus fungsional tersebut,maka dimungkinkan untuk mengubah eugenol menjadi senyawa turunannya. Salah satu senyawa turunan eugenol adalah metileugenol. Metileugenol mempunyai gugus alil yang dapat dikenai reaksi hidrasi sehingga akan dihasilkan senyawa 1-(3,4-dimetoksifenil)-2-propanol. Senyawa 1-(3,4-dimetoksifenil)-2-propanol merupakan senyawa alkohol sekunder, apabila dioksidasi diharapkan akan diperoleh senyawa 1-(3,4-dimetoksifenil)-2-propanol. Senyawa keton tersebut dapat dipergunakan sebagai bahan dasar pembuatan senyawa α-metil-DOPA yang dikenal sebagai obat sakit Parkinson.Oksidasi 1-(3,4-dimetoksifenil)-2-propanol dilakukan dengan menggunakan oksidator piridinium klorokromat (PCC). Reaksi oksidasi dilakukan dengan variasi suhu reaksi, jumlah molPCC, dan waktu reaksi. Hasil oksidasi dianalisis dengan alat kromatografi gas, spektrofotometer infra merah dan spektrofotometer massa. Dari berbagai kondisi reaksi oksidasi dengan PCC dapat diperoleh senyawa 1-(3,4-dimetoksifenil)-2-propanol. Hasil terbaik diperoleh dari reaksi oksidasi yang dilakukan pada suhu kamar. Perbandingan mol alkohol: PCC=1:3, dan waktu reaksi 1,5 jam. Pada kondisi tersebut senyawa 1-(3,4-dimetoksifenil)-2-propanol yang diperoleh mempunyai kemurnian 86,3% dan rendemen 94,4%.

ANALISIS TINGKAT STRES PADA IBU RUMAH TANGGA DI KOTA YOGYAKARTA PASCA KENAIKAN HARGA BAHAN BAKAR MINYAK (BBM) Cornelia Budimarwanti
Jurnal Penelitian Humaniora Vol 13, No 1: April 2008
Publisher : LPPM UNY

This Research is aimed to find out the opinions of housewives of low-middle economic classes towards the government’s policy in increasing the refined fuel oil’s price, to determine the impacts which are experienced by housewives both physically and physiologically after the increasing price of refined fuel oil (BBM) and to determine the stress level of which is experienced by housewives of low-middle economic classes after such increase. The samples were taken from housewives in Yogyakarta City of low-middle economic status. The total of the samples are 126 and taken from 9 sub-districts. This research employs 2 instruments, observation and questionnaire sheets. The housewives’ opinions to the policy of price increase of BBM are divided into three groups. They are the objecting housewives, no commenting-house wives and the housewives who think that such increasing price is a normal occurrence. The result of analysis shows that, in general, the stress level of housewives living in Yogyakarta after the increasing price of refined fuel oil (BBM) is included into very low category; in details of 46.8 % respondents with very low stress level, 35.7% respondents with low stress level, 15.1 % respondents with medium stress level and 2.4 respondents with high stress level.

PENGARUH GUGUS p-METOKSI PADA REAKSI KONDENSASI CLAYSEN-SCHMIDT MENGGUNAKAN METODA GRINDING Karim Theresih; Cornelia Budimarwanti
Jurnal Sains Dasar Vol 5, No 2 (2016): October 2016
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Penelitian ini bertujuan untuk mensintesis senyawa dibenzalaseton, 4-metoksikalkon dan dianizalaseton melalui reaksi kondensasi Claysen Schmidt menggunakan metode grinding dan mengetahui pengaruh gugus p-metoksi pada reaksi tersebut. Sintesis dibenzalaseton menggunakan benzaldehida, aseton, dan NaOH. Senyawa 4-metoksikhalkon disintesis dari campuran 4-metoksibenzaldehida, asetofenon, dan NaOH. Sedangkan sintesis senyawa dianisalseton melalui reaksi Claysen-schmidt antara aseton, anisaldehid, dan katalis basa NaOH dengan perbandingan mol yang digunakan secara berturut-turut 2:1:2. Sintesis dilakukan dengan metode grinding bebas pelarut. Bahan dasar dan katalis digerus secara bersamaan dalam mortir selama 15 menit hingga membentuk pasta yang dikeringkan dan direkristalisasi. Ketiga senyawa hasil yang diperoleh dikarakterisasi menggunakan KLT, FTIR, dan GC-MS. Berdasarkan hasil analisis FTIR dan GC-MS menunjukkan bahwa dibenzalaseton, 4-metoksikhalkon dan dianizalaseton dapat disintesis dan memiliki rendemen berturut-turut 59,93 %, 86,21 % dan 70,39 %. Ada pengaruh gugus p-metoksi pada reaksi kondensasi Claysen-Schmidt pada sintesis senyawa dibenzalaseton, 4-metoksikalkon dan dianizalaseton menggunakan metoda Grinding.Kata kunci : dibenzalaseton, 4-metoksikhalkon , dianizalaseton , metode grinding Abstract This research aims to synthesize the compound dibenzalaceton, 4-methoksikalkon and dianisalaceton through Claysen Schmidt condensation reaction with grinding method and to determine the effect of p-methoxy groups on the reaction. Dibenzalaceton compound was synthesized from benzaldehyde, acetone, and NaOH. Synthesis of compound 4-metoksikhalkon was done using 4-methoxybenzaldehyde, acetophenone, and NaOH. Dianisalceton compound was synthesized through Claysen-schmidt reaction between acetone, anisaldehide, and the catalysts NaOH. This synthesis were performed through solvent-free grinding method. Catalyst base material and simultaneously crushed in mortar for 15 minutes to form a paste. The pasta is dried and recrystallized. The resulted compounds were characterized by TLC, FTIR and GC-MS. Based on the results of the analysis of FTIR and GC-MS showed that dibenzalaceton, 4-methoksikhalkon and dianisalaceton can be synthesized and have succession yield 59.93%, 86.21% and 70.39% . There is the influence of p-methoxy groups in a condensation reaction Claysen-Schmidt on the synthesis of compounds dibenzalaceton, 4-methoksikhalkon and dianizalaceton use grinding method. Keywords: dibenzalaceton, 4-methoksikhalkon, dianizalaceton, grinding method

Preparation and Antimicrobial Activity Analysis of Organic Soap Bar Containing Gnetum gnemon Peel Extract Sri Handayani; Indyah Sulistyo Arty; Cornelia Budimarwanti; Karim Theresih; Evy Yulianti; Melati Khairuddean
Molekul Vol 16, No 3 (2021)
Publisher : Universitas Jenderal Soedirman

Melinjo (Gnetum gnemon L.) peel has been known as antioxidant, antibacterial, and antifungal, but not yet used as cosmetic ingredients or drugs optimally. This research focuses on the production of organic soap bars from melinjo peel extract, the quality testing, and antimicrobial analysis against selected microbes. The soap making process was done by the saponification reaction between the mixture of palm oil and coconut oil with sodium hydroxide through cold and hot processes. Distilled water and ethanol were used as solvents for melinjo peel extraction. The quality test was done by determining insoluble fraction in ethanol, free alkali, and unsaponified fatty matter. An antimicrobial activity test was conducted using the Kirby-Bauer diffusion method. The result shows that the quality test fit with INS 2016 for all the criteria except for unsaponified fatty acid in the cold process soap bar. Inhibition zone of organic soap bar sequentially decreased against the growth of Tricophytone mentagrophytes, Staphylococcus aureus, and Staphylococcus epidermidis. Therefore, the organic soap bar with melinjo peel extract shows a good potential to be used as an antimicrobial soap.

DEVELOPMENT OF SIMPLE ANALYTICAL METHOD OF OMEGA-3 FATTY ACID BY PROPANOIC ACID DETERMINATION USING ALKALIMETRIC TITRATION Sri Handayani; Cornelia Budimarwanti
Indonesian Journal of Chemistry Vol 6, No 3 (2006)
Publisher : Universitas Gadjah Mada

The content of omega-3 in the fish oil capsules have been determined by alkalimetrie titration method. This method has been done in three ways. Firstly, fatty acids were oxidized by KMnO4 using H2SO4 as catalyst. Secondly, propanoic acid as the result of oxidation was separated by distillation. Furthermore, distillated propanoic acid was titrated. Precision, accuracy, repeatability, and reproducibility of the research were good enough for further development as a routine method for determination of omega-3 content.

Microwave-Assisted Organic Reactions: Eco-friendly Synthesis of Dibenzylidenecyclohexanone Derivatives via Crossed Aldol Condensation Sri Handayani; Cornelia Budimarwanti; Winarto Haryadi
Indonesian Journal of Chemistry Vol 17, No 2 (2017)
Publisher : Universitas Gadjah Mada

The synthesis of dibenzylidenecyclohexanone derivatives via environmentally friendly Microwave Assisted Organic Synthesis (MAOS) crossed aldol condensation had been carried out. The condensation reaction to synthesize the dibenzylidenecyclohexanone 8b was performed by reacting benzaldehyde 4 and cyclohexanone 2 (mole ratio of 2:1) with NaOH as catalyst for 2 min under microwave irradiation. The benzaldehyde derivatives used in this study were 4-methoxybenzaldehyde and 3,4-dimethoxybenzaldehyde and gave of (2E,6E)-bis(4-methoxy benzylidene)cyclohexanone 8a and (2E,6E)-bis(3,4-dimethoxybenzylidene)cyclohexanone 8c, respectively. The study was commenced by searching the optimum concentration of NaOH. The reaction yield was determined by TLC scanner and the structure was elucidated by FTIR and NMR spectrometers. For the comparison, the reaction was also carried out by using stirring method. The results showed that optimum concentration of NaOH was 5 mmole. By using the optimum condition via MAOS method, the compounds 8a, 8b and 8c were obtained in 100, 98 and 93%, respectively. The research also proved that the method of dibenzylidenecyclohexanones (8) synthesis using MAOS was more efficient than stirring method.

Synthesis of ZnO Nanoparticles from Zink Acetate using Red Betel and Bay Leaves Extract and It’s Application as Sunscreen Karim Theresih; Cornelia Budimarwanti; Indyah Sulistyo Arty; Sri Handayani; Novia Putri Ramadhani; Rakhmawati Kurniasih
Indonesian Journal of Chemistry and Environment Vol 4, No 1 (2021): JUNE 2021
Publisher : Universitas Negeri Yogyakarta

The ZnO nanoparticles have been synthesized using red betel and bay leaves extract and characterized to analyze the maximum wavelength, crystallinity, particle size, composition, and its activity as sunscreen. The synthesis of ZnO nanoparticles was carried out through reflux method using Zn(CH3COO)2. 2H2O red betel leaf as bioreductor. The same procedure was also applied by changing the betel leaf extract with bay leaf extract. The resulted materials were characterized by UV-Vis spectrophotometry, FTIR, PSA, XRD, and SEM EDX. The ZnO nanoparticles synthesized with red betel leaf have a maximum wavelength of 374.5 nm, wave number of 462.92 cm-1, particle size of 23.309 nm, 74.1% of Zn and 16% of O, SPF value of 8.047942. ZnO nanoparticles synthesized using bay leaf extract have a maximum wavelength of 374 nm, high crystallinity properties with a hexagonal crystal structure, an average particle size of 2.463 nm, 64.21% of Zn and 22.85%, and an SPF value of 2.886969. The activity test of ZnO nanoparticles as sunscreen showed that synthesis both using red betel and by leaves extract resulted in a good sunscreen activity test comparing with ZnO synthesized using ethanol as a control. Thus the synthesis of ZnO nanoparticles using natural extract is being a better way to use as a green synthesis that environmentally friendly.

Co-Authors Abdillah, Muchammad Ikmal Anasriah, Tria Novita Chintya Ayu Triwijayanti Dewi, Romala Dini Rohmawati Dwi Lestari Eka Purnama Evy Yulianti Handayani, Sri Indyah Sulistyo Arty Indyah Sulistyo Arty Isnaeni, Wahyu Nur Karim Theresih Karim Theresih Karim Theresih Maghisya Oktanni Maghisya Tri Oktanni Melati Khairuddean Novia Putri Ramadhani Prashinta Nita Damayanti Pratiwi, Oktavia Rahmawati, Dita Rakhmawati Kurniasih Sari, Dista Arum Sri Handayani Tesia Aisyah Rahmania Tjakraningtyas, Wahyu Utami, Julia Winarto Haryadi Yohanes Dedi Kurniawan Yuliyanti, Diana

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