Isti Pudjihastuti
PSD 3 Teknik Kimia Fakultas Teknik Universitas Diponegoro Jln Prof Sudarto, SH Pedalangan Tembalang Semarang

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PEMBERDAYAAN INDUSTRI KECIL KERIPIK PISANG DALAM UPAYA MENUJU INDUSTRI MANDIRI

GEMA TEKNOLOGI Vol 16, No 2 (2011): Periode Oktober 2010 - April 2011
Publisher : GEMA TEKNOLOGI

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Abstract

IstiPudjihastuti, Edy Supriyo, Retno Hartati, in this paper explain that the development of micro industries, in banana chip  micro industry to the  member of group which is culinary enterprise Pemalang speciallized is give suitable solution to  consument for giving natural culinary with high nutrition value independently and cheap. The development of micro  industries is circular activity that consist of briefing about the use of gelatse system in banana chip production by naturally and independently, the suitable tachnique of banana chip production, production of furnace completely by steack as pilot plan, assitancy when the producer makes snack in gelatse system. Moreover, the taste of snack more delicious, the market bigger.   Key words: micro industries banana chip

PEMBERDAYAAN INDUSTRI KECIL KERIPIK PISANG DALAM UPAYA MENUJU INDUSTRI MANDIRI

METANA Edisi Khusus Februari 2011
Publisher : METANA

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Abstract

Abstract                                                                          The development of micro industries, in banana chip micro industry to the member of group which is culinary enterprise Pemalang speciallized is give suitable solution to consument for giving natural culinary with high nutrition value independently and cheap.The development of micro industries is circular activity that consist of briefing about the use of gelatse system in banana chip production by naturally and independently, the suitable tachnique of banana chip production, production of furnace completely by steack as pilot plan, assitancy when the producer makes snack in gelatse system. Moreover, the taste of snack more delicious, the market bigger.

STUDI AWAL PEMBUATAN ASAM LEMAK SECARA ENZIMATIK DARI BUAH SEGAR KELAPA SAWIT

METANA Vol 1, No 2 (2004): Volume 1, Nomor 2, Desember Tahun 2004
Publisher : METANA

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Abstract Vegetable oil is one of plantation commodity, having advantages either as food or olechemical. One of the connecting bridges between vegetable oil and oleochemical industry is the conversion of vegetable oil to fatty acid. The supply of fatty acid in indonesia by import. Beside the promising market in global trading indonesia has the superiority in raw material supply for fatty acid  production. In indonesia, the most raw materials used for producing fatty acid naturally include crude palm oil (CPO), palm kertnel oil (PKO), and coconut oil (CNO). Fatty acid production by enzymatic from palmfruit can be reduce investation and operation cost. The objective of this research is finding a new way of product fatty acid by direct separation from palm fruit.  The research is information of process condition in fatty acid production by enzymatic from palm fruit, by quality of fatty acid is used in cosmetics, plastic, tyre, PVC, stabilizer, paint and soap industries. The variables studied in this process include temperature, pH, and water consentration. Yield of fatty acid is analysed for quality and quantity. The quality analysis include water consentration, acid number, iod number and perokside number. The quantity analysis is used titration or chromatografi gas. The research shows that the enzyme lipase action increases by temperature increase, and optimum temperatureof lipase from palm fruit for hydrolysis reaction is 35o C. If used buffer pH of reaction, fatty acid production can be increase. Beside that, water consentration increases by fatty acid production increase to. Keywords : fatty acid, enzyme, palm fruit

PEMBUATAN MODEL INDIKATOR TEMPERATUR-WAKTU UNTUK MONITORING KUALITAS PRODUK UDANG DAN DAGING SAPI BEKU

METANA Volume 06, Nomor 2, Tahun 2010
Publisher : METANA

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Abstract Freezing is one way of preserving food for maintaining the quality before consumption. Frozen foods which are now circulating in the supermarket are not given yet a tool to monitor whether the food is never experienced thawing (melting) for some period. In the frozen product that has undergone uncontrolled thawing will increase microbial content rapidly at increasing temperature 10 0C. In this study the temperature-time estimator tool manufactured for frozen beef products and shrimp. This estimator tool consists of citric acid and blue litmus paper. The response will appear in blue litmus paper that changes the color becomes red when positioned at the undesired temperature. In this study, the temperature-time estimator tool is made from citric acid 1.1%, cotton and litmus paper packed in cellophane. The response is influenced by the position of estimator tool and this tool-time temperature estimator can be applied for frozen beef products and shrimp. Keywords: beef, frozen, indicators, shrimp

ASIDOLISIS ENZIMATIK MINYAK IKAN TUNA( THUNNUS THYNNUS) MENJADI PRODUK ASAM LEMAK KAYA OMEGA-3 DENGAN PEMANFAATAN LIPASE GETAH PEPAYA (carica papaya latex)

METANA Vol 7, No 01 (2011): Volume 7, No. 01 Juli 2011
Publisher : METANA

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Abstract

ABSTRACT Incorporation of omega-3 polyunsaturated acids (n-3 PUFA) into Tuna (Thunnus thynnus) fish oil was investigated by using acidolysis enzimatis Process. The product of this modification is expected to be used as an ingredient nutrifition food products, especially in milk and baby food as well as pregnant and lactating The purpose of this study was to optimizing the used of lipased papaya latex (Carica papaya latex) in the product to incorporation fatty acids rich in omega-3.Bioreactor acidolysis enzematik development and Optimization of process the productivity of fatty acids rich in omega-3. Reaction Acidolysis was conducted between tuna (thunnus thynnus) fish oil by microbial lipase (5% of the weight of the substrate mixture) or vegetable lipased (Carica papaya latex) (6-10% by weight subtract mixture) as biocatalist.Acidolysis mixture the bioreactor at 40 o C for (2-6 hours) and the stirring speed of 200 rpm, pH (4.5 to 6.5). to eliminate free fatty acids from the product acidolysis performed neutralization with NaOH The results are expected to show that the lipase papaya latex (Carica papaya latex) can be used as biocatalyst incorporated omega-3 fatty acids in   tunaIthunnus thunnyl) fish oil . In this study sought conditions for optimum incorporation rate, ie the use of papaya latex lipase concentration of 8%, the ratio of concentrations of omega-3 fatty acid and palm oil (1:1), pH = 5.5, Optimal time of 4 hours and the temperature (40oC) . The results were analyzed incorporation of omega-3 (EPA and DHA) with GC.EPA generated: 3.57% and DHA = 3.91% Key word:Acidolysis,Tuna fish oil

FORMULASI BIOADITIF SUPER “RON BOOSTER“ PADA BAHAN BAKAR MINYAK MELALUI EKSTRAKSI MINYAK SEREH WANGI (CITRONELLA OIL) MENGGUNAKAN GELOMBANG MIKRO

Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Vol 1, No 1 (2014): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 5 2014
Publisher : Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik

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Abstract

Sektor energi memiliki peranan penting dalam mendukung pembangunan berkelanjutan karena segala aktivitas manusia membutuhkan pasokan energi. Kebijakan energi nasional mentargetkan 5% kebutuhan energi nasional harus dapat dipenuhi melalui pemanfaatan biofuel sebagai energi terbarukan karena pembakaran dari BBM mengakibatkan pencemaran udara dan global warming. peningkatan proses pembakaran dapat melalui penambahan aditif, oleh sebab itu perlu adanya eksplorasi bioaditif sebagai senyawa tambahan dalam bahan bakar. Salah satu alternatif aditif yang baik dan ramah lingkungan adalah minyak atsiri. Diantara 14 jenis minyak atsiri yang menjadi komoditi ekspor adalah minyak Serai Wangi. Minyak serai wangi diprediksi mempunyai karakteristik yang mendekati karakteristik bahan bakar, seperti berat jenis, titik didih, dan sifat mudah menguap. Proses ekstrak diharapkan akan mendongkrak produktifitas dan kualitas kandungan minyak serai wangi. Proses yang ditawarkan adalah ekstraksi minyak sereh wangi menggunakan gelombang mikro. Prinsip pemanasan menggunakan gelombang mikro bedasarkan  tumbukan langsung dengan material polar atau solvent dan diatur oleh dua fenomena yaitu konduksi ionik dan rotasi dipol. Hasil dari penelitian ini berupa senyawa bioaditif yang dicampurkan dengan BBM dan meningkatkan cetane number dan octane number. Variabel berubah yang digunakan adalah proes ekstraksi dengan suhu 40°C dan 60° C, serta  pelarut n-heksan dan etanol . setelah didapat ekstrak bioaditif kemudian dicampur dengan BBM dengan formulasi perbandingan bioaditif minyak sereh wangi : BBM ( Solar atau Bensin ) adalah rentang 0,1-1 : 100 Dan diilkukan pengujian Gas Chromatografi dan cetane-octane number.Rendemen maksimal berada pada suhu 70oC dengan pelarut ethanol selama 2 jam ekstraksi. Formulasi ang efisien untuk penambahan pada BBM berada pada rasio 3% dengan peningkatan angka cetana dari point 48 menjadi 50. Kata Kunci : Energi, Bioaditif. Minyak Sereh Wangi, Ekstraksi, Gelombang Mikro

ASIDOLISIS ENZIMATIK MINYAK IKAN TUNA( THUNNUS THYNNUS) MENJADI PRODUK ASAM LEMAK KAYA OMEGA-3 DENGAN PEMANFAATAN LIPASE GETAH PEPAYA (carica papaya latex)

METANA Vol 8, No 01 (2012): Juli
Publisher : METANA

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Abstract

Incorporation of omega-3 polyunsaturated acids (n-3 PUFA) into Tuna (Thunnus thynnus) fish oil was investigated by using acidolysis enzimatis Process. The product of this modification is expected to be used as an ingredient nutrifition food products, especially in milk and baby food as well as pregnant and lactating The purpose of this study was to optimizing the used of lipased papaya latex (Carica papaya latex) in the product to incorporation fatty acids rich in omega-3.Bioreactor acidolysis enzematik development and Optimization of process the productivity of fatty acids rich in omega-3. Reaction Acidolysis was conducted between tuna (thunnus thynnus) fish oil by microbial lipase (5% of the weight of the substrate mixture) or vegetable lipased (Carica papaya latex) (6-10% by weight subtract mixture) as biocatalist.Acidolysis mixture the bioreactor at 40 o C for (2-6 hours) and the stirring speed of 200 rpm, pH (4.5 to 6.5). to eliminate free fatty acids from the product acidolysis performed neutralization with NaOH The results are expected to show that the lipase papaya latex (Carica papaya latex) can be used as biocatalyst incorporated omega-3 fatty acids in   tunaIthunnus thunnyl) fish oil . In this study sought conditions for optimum incorporation rate, ie the use of papaya latex lipase concentration of 8%, the ratio of concentrations of omega-3 fatty acid and palm oil (1:1), pH = 5.5, Optimal time of 4 hours and the temperature (40oC) . The results were analyzed incorporation of omega-3 (EPA and DHA) with GC.EPA generated: 3.57% and DHA = 3.91% Key word:Acidolysis,Tuna fish oil

TEKNIK IMOBILISASI ENZIM SECARA ENTRAPMENT DALAM SINTESIS METIL ESTER BERBAHAN MINYAK JELANTAH

Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Vol 1, No 1 (2014): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 5 2014
Publisher : Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik

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Abstract

Peningkatan kebutuhan komsumsi energi dunia tentu akan membuat cadangan minyak semakin menipis belakangan ini sehingga wacana renewable energi kian di eksplorasi oleh berbagai pihak, salah satu yang mulai digencarkan adalah biodiesel Namun selama ini, pembuatan biodiesel yang dilakukan secara transesterifikasi dengan reaktan methanol dan katalis basa memiliki banyak kelemahan yaitu terjadinya reaksi penyabunan dan sulit dipisahkan karena katalisnya homogen sehingga saat ini dikembangkanlah enzim sebagai katalis yang memiliki keunggulan dimana memiliki aktivitas spesifik dan mudah dipisahkan karena katalisnya heterogen. Mengingat harga yang mahal maka dilakukanlah imobilisasi dalam matrik agar enzim dapat dipakai berulang dan menghemat biaya dalam sistem kontinyu. Penelitian dimulai dengan mengaktivasi zeolit sebagai matriks support, dilanjutkan dengan imobilisasi enzim dalam zeolit untuk selanjutnya proses sintesa biodiesel pada suhu 37 ºC selama 50 jam 150 rpm dengan rektan metil asetat. Setelah biodiesel dihasilkan maka dilakukan uji analisa secara kuantitatif dengan HPLC dan kualitatif serta uji performa.Hasil menunjukkan bahwa perbandingan minyak jelantah : metil asetat sebesar 1:12 dengan kompossisi enzim 3% akan menghasilkan biodiesel dengan konsentrasi 4,35 mol/t. Kata kunci: Biodiesel, Imobilisasi enzim, Metil Asetat, Minyak jelantah.

REKAYASA PROSES PEMBUATAN SERBUK PEWARNA BATIK BIODEGRADABLE BERBAHAN ANTOSIANIN LIMBAH KULIT TERONG BELANDA (Chypomandra betacea) DENGAN KOMBINASI EKSTRAKSI GELOMBANG ULTRASONIK DAN AQUASOLVENT

Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Vol 1, No 1 (2013): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 4 2013
Publisher : Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik

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Abstract

Dewasa ini Batik telah menjadi trend baru dikalangan masyarakat. Meningkatnya trend juga diiringi dengan peningkatan produksi oleh para pengrajin di kalangan masyarakat. Namun akibat perkembangan IPTEK , banyak diantara pengrajin yang lebih memilih menggunakan pewarna sintetik yang jauh lebih berbahaya sehingga dirasa perlu untuk dilakukan diversifikasi ke pewarna alami.Banyak disekitar kita beberapa bahan yang dapat digunakan sebagai pewarna, tetapi memanfaatkan limbah adalah pilihan yang tepat dan salah satunya adalah limbah Kulit Terong Belanda yang mengandung Antosianin (Astawan, 1997). Sayangnya selama ini dibeberapa daerah seperti Wonosobo, Terong Belanda hanya dimanfaatkan buahnya saja. Rekayasa proses ekstraksi dilakukan dengan mengkombinasikan gelombang ultrasonic dan aquadest pada suhu 300 400 500 600 selama 30, 60, 90, 120 menit pada pH = 1 dengan tambahan asam asetat. Ekstraksi ultrasonik dipilih karena akan membuat proses ekstraksi lebih cepat dan bersifat yang tidak merusak. Hasil menunjukkan rendemen Antosianin yang terekstrak paling besar adalah pada perlakuan 500 selama 60 menit dengan hasil 23,78 mg/100 gr. Selanjutnya ekstrak akan dijadikan serbuk secara drying dan kristalisasi dengan penambahan maltodekstrin 10 % v/v untuk kemudian dicobakan terhadap Batik.Kata Kunci : Cyphomandra betacea, Ekstraksi Gelombang Ultrasonik, Pewarna Batik.

OPTIMASI PRODUKSI PROTEIN SEL TUNGGAL DARI BAGASE TERHIDROLISA DENGAN FERMENTASI OLEH SACCAROMYCES CEREVICEAE

METANA Vol 8, No 02 (2012): Volume 8 No.02 Desember 2012
Publisher : METANA

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Abstract

The Came pulp (bagase) were main contained cellulose, through process delignification and hidrolized can be used to growting sacaromyces cereviceae yeast as fermented media, so can produced biomass microbial as known as single cell protein (SCP).Design experiment was random block with treatment nutrient added as long as fermented process. The measured parameter were protein contained in microbial biomass with Kehjdahl method. Optimum result were formed to 8 days fermentation and nutrient added (NH4)2SO4:1 gr,MgSO47H2O : 0,5 gr, molase (tetes) 20% : 2 ml to media 50 gr. Key word: bagase, Saccaromyces Cereviceae,SCP