Category: Student Task

News

 

Congratulation to Ms Pebri Ari Pangestin who has defended her bachelor thesis August 2017.

Congratulation to :

  • Dinna Noorani for defended her undergraduate thesis (January 2017) “Green synthesis copper and zinc nanoparticle using Pinus merkusii Jungh & De Vriese extract and their antibacterial activity on Staphylococcus aureus” and conferred her bachelor degree in chemistry (B.Sc. Chem.)
  • Nuraini Uswatun Chasana, B.Sc. (Chem.)  for defended her master thesis (January 2017) “Synthesis and characterisation of polyaniline nanoparticle as catalyst for alpha-pinene oxidation with hydrogen peroxide” and conferred master of science in chemistry (M.Sc. Chem.)

Final examination

Congratulation to:

  1. Nurul Inayah, defended the thesis (Eucheuma spinosum chemo-prospecting) to graduate degree commission (February 1th, 2016).
  2. Ainul Musayyadah, defended thesis (alpha-pinene chemo-prospecting) to undergraduate degree commission (January 27th, 2016).

 

 

News

Congratulation for some students for their study completion (October 2015) and graduation: Merry, Bagus N Ramadhan, Muthia Nayla, and Heny.

Congratulations

Congratulation to Bagus NR and Naila for presenting their research result on Chemistry National Seminar 30 May 2015 in Jogjakarta.

  • Bagus presented selective oxidation of alpha-pinene in acidic condition.
  • Nailya give a talks correlate green isomerization alpha-pinene catalyzed by acidic titanium.

 

Peraturan terkait skripsi JKUB

Link http://kimia.ub.ac.id/wp-content/uploads/2015/01/04.AK_.2015.pdf

Ucapan Selamat

Selamat kepada (1) Sri Eva Lusiana, (2) Udrika Lailatul Qodri, (3) Sari Sukma, (4) Yuga Adi Pranata yang telah menyelesaikan ujian skripsi sekaligus komprehensif dan dinyatakan LULUS.

 

Selamat juga kepada Niary Sandi Yusvrina yang lolos PIMNAS untuk PKM-Pnya.

Alpha-Pinene in Acidic Conditions: Products Determination and the Reaction Kinetics

One step conversion of alpha-pinene into an industrially-bulk chemical is a long lasting’s journey. It composes the major component in turpuntine oil. This report discloses conversion of alpha-pinene in acidic system i.e. hydrochloric and nitric acid mixtures. The acid ratios, reaction time and temperatures were studied to discriminate product formation including the reaction kinetic. Product identification was undertaken by using gas chromatography (GC), infrared spectrophotometry (FTIR) and gas chromatography-mass spectrometry (GCMS). It was isolated 65.74% yield of bornyl chloride, and also other minor products such as norbornyl chloride, champheil hydrochloride, trans- and cis-b-ocimene, camphene, 2-carene, limonene, b-myrcene, nonane, and p-cymene. The increasing of acidic ratio, reaction temperature and reaction time significantly accelerates the product formation. It was also found that the reaction follows first order reaction with rate equation LnCt = 45,766 – 6×10-5t.

 

How to cite: Masruri*, Bambang Purwono and Muhamad Muchalal, Alpha-Pinene in Acidic Conditions: Products Determination and the Reaction Kinetics, Proceeding of The 4th Annual Basic Science International Conference (BaSIC) 2014, February 12-13rd, 2014, Batu, Indonesia

Quinazoline Alkaloid from Indonesian Angsret (Spathodea campanulata Beauv) Stembark as A Growth Inhibitor of Staphylococcus aureus*

An quinazoline alkaloid was isolated as 4a,8a-dihydroxy-7-methyl-3,4,4a,5-tetrahydroquinazoline-6,8(7H,8aH)-dione [1] from Spathodea campanulata Beauv stembark. Isolation was undertaken following common procedure for alkaloid isolation following separation under flash column chromatography. Chemical identification was performed using dragendorf test, and the structure was confirmed by UV-Vis, IR, and NMR spectrometry. In addition, the antibacterial test was taken place by a growth inhibiting activity on Staphylococcus aureus in a range concentration.

How to cite: Masruri,* Mohamad Farid Rahman, Mohamad Lutfilah, and Ady Sumaryanto, Proceeding of the 2nd International conference of the Indonesian chemical society, October 22-23, 2013, Yogyakarta. ISBN 978-979-96595-4-5

NEWS

We offer research topic for some undergraduate students (2-4 students). The topic will include on Profilling of the Secondary Metabolite from Local Agriculture and Horticulture’s Product. Most of the methods will be learned including procedure of extraction-isolation (gas/solid) and spectrometry analysis. Gas chromatography-mass spectrometry (GCMS) will be applied.
If you interest to join, contact masruri@ub.ac.id

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