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PENGARUH KANDUNGAN AMILOSA TERHADAP KARAKTERISTIK FISIK DAN ORGANOLEPTIK NASI INSTAN prima luna; heti herawati; sri widowati; aditya bayu prianto
Jurnal Penelitian Pascapanen Pertanian Vol 12, No 1 (2015): Jurnal Penelitian Pascapanen Pertanian
Publisher : Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jpasca.v12n1.2015.1-10

Amilosa dan amilopektin merupakan komponen utama penyusun pati. Komasi, sehingga pengaruh kedua komponen tersebut menarik untuk dipelajamilosa dari tiga varietas padi dalam produksi nasi instan. Hasil penelitianerbeda nyata dengan waktu rehidrasi (p<0.0001). Perlakuan yang terbaik an dimasak dengan rice cooker. Waktu rehidrasi adalah 4 menit dan rendemeningkat dan elastisitas beras semakin rendah sehingga berpengaruh termembutuhkan air yang lebih banyak pada proses produksi nasi instan. Sesekstur nasinya lunak dan lengket, sedangkan beras dengan amilosa tinggi tenstan cenderung menyebabkan terjadinya peningkatan kadar amilosa sebeluandungan amilosa beras berkorelasi negatif dengan waktu rehidrasi (r ≤ memiliki pengaruh signifikan terhadap retrogradasi pati dan sifat tekstur nmengalami retrogradasi, sedangkan amilosa rendah lambat beretrogradasiehidrasi nasi instan semakin cepat.Kata kunci: beras, nasi instan, kandungan amilosa, karakteristik fisik

Optimasi Pembuatan Produk Turunan Minyak Nabati Monoasilgliserol Secara Esterifikasi Enzimatis Prima Luna; Nuri Andarwulan; Tri Haryati
Jurnal Penelitian Pascapanen Pertanian Vol 8, No 1 (2011): Jurnal Penelitian Pascapanen Pertanian
Publisher : Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jpasca.v8n1.2011.24-31

Monoasilgliserol (MAG) dari asam laurat merupakan salah satu produk turunan dari minyak nabati yang memiliki keistimewaan, berfungsi sehagai emulsifier, pengawet pangan, sanitizer, dan food supplement untuk meningkatkan imunitas tubuh. Penelitian ini bertujuan mencari kondisi optimum pembuatan monoasilgliserol dengan parameter komposisi MAG melaiui proses esterifikasi menggunakan enzim lipase imobil sebagai katalis. Metode esterifikasi enzirnatis kontinyu dilakukan pada reaktor packed bed sirkulasi. Rancangan percobaan optimasi pada penelitian ini menggunakan Central Composite Design dari Response Surface Methods (RSM). Suhu dan waktu reaksi merupakan faktor percobaan penelitian ini. Kondisi reaksi esterifikasi enzimatis kontinyu rnenggunakan rasio gliserol/asam lemak (5:1); rasio pelarut/substrat 8,8:1 dan residence time 23,57 menit. Hasil reaksi esterifikasi menggunakan RSM menunjukkan persamaan kuadrat optimasi MAG adalah Y= - 61,700 + 6,088 x1+3,259 x2 - 0,065 x12 + 0,017 x1x2 - 1,792 x22 dan menghasilkan MAG maksimum pada suhu dan waktu reaksi optimum 46,92°C (47±0,5)°C and 1,1 jam. Hasil validasi reaksi esterifikasi sebanyak lima kali ulangan menggunakan enzim lipase pada kondisi di atas menghasilkan rendemen 81,09±2,99% dengan komposisi MAG 83,15±3,51%. Koefisien keragaman untuk validasi rendemen dan komposisi MAG yaitu 3,69 and 4,25%. MAG memiliki sifat fisikokimia: bilangan asam 1,78±008%, bilangan peroksida 0,49±0,14 meq O2/kg MAG, kadar gliserol bebas 0,26%, dan memiliki kisaran titik leleh 53-53,5°C. Synthesis Optimization of Monoacylglyserol by Enzimatic Esterification.Monoacyglycerol (MAG) from lauric acid is a superior product derived from vegetable oil, which can be used as emulsifier, food preservative, sanitizer, and food supplement for increased human immunity. The aim of this research was to obtain the optimum conditions for monoacylglycerol synthesis based on MAG content using commercialized lipase. The Central Composite Design of Response Surface Methods (RSM) was used to arrange the experiments. Temperature and reaction time were the two variables investigated in the present study. Continuous enzymatic esterification was conducted in a circulated packed bed reactor with glycerol/oil molar ratio 5: I, solvent/substrate ratio 8.8:1 (wt/wt) and residence time 23.57 minute. The result showed that the quadratic equation for synthesis optimization of MAG was Y= - 61,700 + 6,088 x1+3,259 x2 - 0,065 x12 + 0,017 x1x2 - 1,792 x22 which produced maximum MAG at an optimum temperature of 46.92°C (47±0.5) °C and reaction time for 1,1 hour. Using the optimized conditions, lipase esterification, which was repeated five times, produced 81.09±2.99% yield with MAG content of 83.15±3.51%. Coefficients of variance for validation of the yield and MAG content were 3.69 and 4.25%, respectively. The MAG synthesized had the following physicochemical properties: acid value 1.78±008%, peroxide value 0.49±0.14 meq O2/kg MAG, free glycerol content 0.26%, and melting point 53-53.5°C

Recent studies of synthetic antibody-based 3-MCPD determination technology Hasim MUNAWAR; Prima LUNA; Irma KRESNAWATY; Happy WIDIASTUTI
E-Journal Menara Perkebunan Vol 89, No 1 (2021): April, 2021
Publisher : INDONESIAN RESEARCH INSTITUTE FOR BIOTECHNOLOGY AND BIOINDUSTRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v89i1.402

3-Chloro-1,2-propanediol (3-MCPD) is classified by the International Agency for Research on Cancer as carcinogenic material. 3-MCPD will also become one of the European Union's requirements, proposing the maximum level of the 3-MCPD in palm oil until 2.5 ppm. Although the reported technologies GCMS and HPLC-FLD demonstrated high sensitivity and selectivity on 3-MCPD determination, those technologies invest in chemical and time-consuming sample preparation and analysis. Molecularly imprinted polymer (MIP), or a synthetic antibody, can be used to recognize 3-MCPD. MIP is more robust under extreme environments such as temperature and pH. This paper, therefore, aims to discuss the application of MIP on sample extraction and analysis to detect 3-MCPD. MIP is synthesized by polymerization of functional monomers surrounding 3-MCPD as a template. 3-MCPD is then removed from the MIP, leaving active cavities. Thus, these sites can either covalently or non-covalently rebind to 3-MCPD. Computational or empirical studies could investigate the composition of MIP. MIP can be manufactured as MIP-based solid phase extraction (MIPSPE) and MIP-based sensor. Both applications showed significant analytical parameters, such as recovery higher than 90% and detection limit lower than 2.5 ppm. Therefore, the application of MIP can be flexible for sample preparation and analysis on the 3-MCPD determination. MIP-based technology would be a prospective instrument to detect 3-MCPD. In the future, producing MIP on an industrial scale will be a challenge to monitor the 3-MCPD level in palm oil.

TEKNOLOGI PEMBUATAN ADSORBEN DARI LIMBAH EKSTRAKSI BIOSILIKA SEKAM PADI Prima Luna
Pasundan Food Technology Journal (PFTJ) Vol 7 No 3 (2020): PASUNDAN FOOD TECHNOLOGY JOURNAL (PFTJ)
Publisher : Department of Food Technology, Universitas Pasundan, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/pftj.v7i3.3001

Adsorbent from lignocellulosic waste constitutes an alternative in industry due to the large amount and easy to get. The unique characteristics of activated carbon from lignocellulosic waste as well as more economically with regard to mass production were the reasons for the development of by-products of this rice husk biosilica waste. This research aimed to produce adsorbent from waste of nanobiosilica powder extraction. Calcination or treatment without impregnation) and with impregnation were applied in this study. Calcination was carried out by heating the residual waste at 600 ° C; 700 ° C; and 800 ° C; however the impregnation process was carried out by immersing the residual waste with catalysts ZnCl2, H3PO4, and KOH with ratio 1: 1 and 1: 2 for 24 hours. Subsequently, carbonisation was carried out at 600 ° C; 700 ° C; and 800 ° C for 1 and 3 hours with variations in mesh sizes of 10, 20, 80, and 100 mesh. The results showed that the waste of nanobiosilica extraction still contained high SiO2 (89.86%) so that it could be used as raw material for adsorber to apply in water purification applications. The calcination treatment showed the highest absorption as well as the area of the pore surface. The best particle size was 100 mesh and calcined at 800 ° C in which has a pore surface area meet the requirement of commercial activated charcoal, which is 15.83 m² / g.

Recent studies of synthetic antibody-based 3-MCPD determination technology Hasim MUNAWAR; Prima LUNA; Irma KRESNAWATY; Happy WIDIASTUTI
Menara Perkebunan Vol. 89 No. 1 (2021): 89 (1), 2021
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v89i1.402

3-Chloro-1,2-propanediol (3-MCPD) is classified by the International Agency for Research on Cancer as carcinogenic material. 3-MCPD will also become one of the European Union's requirements, proposing the maximum level of the 3-MCPD in palm oil until 2.5 ppm. Although the reported technologies GCMS and HPLC-FLD demonstrated high sensitivity and selectivity on 3-MCPD determination, those technologies invest in chemical and time-consuming sample preparation and analysis. Molecularly imprinted polymer (MIP), or a synthetic antibody, can be used to recognize 3-MCPD. MIP is more robust under extreme environments such as temperature and pH. This paper, therefore, aims to discuss the application of MIP on sample extraction and analysis to detect 3-MCPD. MIP is synthesized by polymerization of functional monomers surrounding 3-MCPD as a template. 3-MCPD is then removed from the MIP, leaving active cavities. Thus, these sites can either covalently or non-covalently rebind to 3-MCPD. Computational or empirical studies could investigate the composition of MIP. MIP can be manufactured as MIP-based solid phase extraction (MIPSPE) and MIP-based sensor. Both applications showed significant analytical parameters, such as recovery higher than 90% and detection limit lower than 2.5 ppm. Therefore, the application of MIP can be flexible for sample preparation and analysis on the 3-MCPD determination. MIP-based technology would be a prospective instrument to detect 3-MCPD. In the future, producing MIP on an industrial scale will be a challenge to monitor the 3-MCPD level in palm oil.

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