30 research outputs found
Aplikasi Model Regresi Step Wise Dalam Penentuan Hasil Jagung Putih
No full textWhite corn is a source of functional food, particularly in dry land and dry climate environments. Indonesian Agency for Agricultural Research and Development (IAARD) has released six white corn varieties with various characteristics with wide adaptation area. Breeding programs for developing high yielding white maize varieties is conducted by a series of steps including evaluation of agronomic characteristics of lines/varieties. The objective of the research was to test the applicability of step wise regression model to determine/select agronomic variables that significantly contributed to the yield of white corn. Research was conducted in rainy season 2012 at Muneng experimental station, East Java Province. Maize parental plants used were the result of crossing CML140 x CML264Q lines namely Bima Putih. A total of 14 variables were tested for their significances to maize yield. SPSS and Microstat software were used to calculate the best variables that contributed to the yield significantly. The results showed that among 14 variables involved in the calculation, there were five variables that contributed to the yield, namely: weight of cob at harvest (x5), ratio of the weight of dry grain to the total cob weight (x9), the seed moisture content (x6), and number of ears (x4). Regression models generated from step wise screening was y=-4,33+0,763x5+0,1009x11+0,104x9-1,22x6+0,016x4. The coefficient of determination (R2) of the model was 0.99, indicating the ability of the regression model to fit the data. This showed that the five independent variables included in the model were the main variables in determining the outcome of hybrid seed Bima Putih-1. This result could be further used as reference to conduct parameter screening to produce high yielding white maize
IDENTIFIKASI SENYAWA FITOKIMIA DAN EVALUASI PENGARUH PEMANASAN TERHADAP DAYA ANTIOKSIDAN BUMBU-BUMBU RENDANG
No full textIDENTIFIKASI SENYAWA FITOKIMIA
DAN EVALUASI PENGARUH PEMANASAN TERHADAP DAYA ANTIOKSIDAN BUMBU-BUMBU RENDANG
Fauzan Azima, Tutty Anggraini, Nining Sriwahyuni
Fakultas Teknologi Pertanian, Jurusan Pascasarjana TIP
Corrresponding author; email: [email protected]
ABSTRAK
Penelitian ini bertujuan untuk mengetahui senyawa fitokimia bumbu-bumbu yang digunakan dalam pembuatan rendang, mengetahui kadar bahan aktif penyusun bumbu-bumbu rendang, mengetahui daya antioksidan masing-masing bumbu rendang, dan produk rendang (gulai, kalio, rendang basah, dan rendang kering). Penelitian menggunakan Rancangan Acak Lengkap (RAL) terdiri dari 4 perlakukan dan 3 kali ulangan. Data pengamatan dianalisis dengan uji F, dan uji lanjut Duncan’s New Multiple Range Test (DNMRT) pada taraf nyata 5%. Perlakuan pada penelitian ini adalah lama pemanasan masing-masing A = pemanasan selama 30 menit sampai terbentuk gulai, B = pemanasan lanjutan selama 30 menit sampai terbentuk kalio C = pemanasan lanjutan selama 30 menit sampai terbentuk rendang basah, D = pemanasan lanjutan selama 30 menit sampai terbentuk rendang kering. Hasil penelitian menunjukkan bumbu rendang mengandung senyawa fitokimia ( fenolilk, alkaloid, flavonoid, terpenoid, dan saponin). Jumlah komponen utama yang didapatkan pada bawang merah, cabe merah, cengkeh, daun jeruk, daun kunyit, daun salam, jahe, jintan, kayu manis, kemiri, ketumbar, lengkuas, pala, dan sereh berturut-turut yaitu inulin 2695.5 ppm, kapsaisin 49.5 ppm, eugenol 57.09 %, trans-cinnamyl acetate 13.32%, kurkumin 2.057 ppm, eugenol 3.43%, zingiberine 2.84%, safranal 2152.2 ppm, sinamaldehid 4.52%, linolenic acid 49.91 %, linalool 7.03 %, sineol 1.07 %, miristin 0.02 ppm, ascorbic acid 31.82 %. Nilai aktifitas antioksidan ekstrak rempah-rempah berkisar antara 15.29 – 63.37%. Bumbu rendang dengan penambahan santan berkisar 1.31 – 26.03%, cengkeh memiliki aktifitas antioksidan tertinggi pada ekstrak rempah dengan nilai aktivitas antioksidan 63.37% dan diikuti cabe 58.16%, bawang putih, 50.12%, kayu manis 43.73%, sereh 36.33%, jintan 35.69%, daun jeruk purut 35.60%, lengkuas 22.77%, ketumbar 22.69%, pala 21.64%, daun salam 20.73%, jahe 16.92%, kemiri 16.74%, bawang merah 16.09%, daun kunyit 15.29%. Perkiraan masa simpan rendang berdasarkan hasil pengamatan dengan rancimat 743; kalio 0.24 bulan, rendang basah 2.7 bulan, dan rendang kering 6.8 bulan.
Kata kunci : antioksidan, rempah-rempah, pemanasan, senyawa aktif fitokimi
APLIKASI MODEL REGRESI STEP WISE DALAM PENENTUAN HASIL JAGUNG PUTIH
No full textWhite corn is a source of functional food, particularly in dry land and dry climate environments. Indonesian Agency for Agricultural Research and Development (IAARD) has released six white corn varieties with various characteristics with wide adaptation area. Breeding programs for developing high yielding white maize varieties is conducted by a series of steps including evaluation of agronomic characteristics of lines/varieties. The objective of the research was to test the applicability of step wise regression model to determine/select agronomic variables that significantly contributed to the yield of white corn. Research was conducted in rainy season 2012 at Muneng experimental station, East Java Province. Maize parental plants used were the result of crossing CML140 x CML264Q lines namely Bima Putih. A total of 14 variables were tested for their significances to maize yield. SPSS and Microstat software were used to calculate the best variables that contributed to the yield significantly. The results showed that among 14 variables involved in the calculation, there were five variables that contributed to the yield, namely: weight of cob at harvest (x5), ratio of the weight of dry grain to the total cob weight (x9), the seed moisture content (x6), and number of ears (x4). Regression models generated from step wise screening was y=-4,33+0,763x5+0,1009x11+0,104x9-1,22x6+0,016x4. The coefficient of determination (R2 ) of the model was 0.99, indicating the ability of the regression model to fit the data. This showed that the five independent variables included in the model were the main variables in determining the outcome of hybrid seed Bima Putih-1. This result could be further used as reference to conduct parameter screening to produce high yielding white maize</jats:p
RESPON GENOTIPE JAGUNG HIBRIDA SILANG TIGA JALUR TERHADAP CEKAMAN INTENSITAS CAHAYA RENDAH
No full textPengembangan jagung sebagai tanaman sela dibawah tanaman tegakan merupakan salah satu alternative untuk mengatasi berkurangnya lahan jagung. Maslah yang dihadapi jagung sebagai tanaman sela adalah berkurangnya intensitas cahaya akibat naungan, sehingga perlu untuk merakita jagung toleran naungan. Perhitungan kriteria toleran sangat berguna untuk menyeleksi suatu genotipe yang toleran pada kondisi cekaman naungan. Tujuan dari penelitian ini adalah mengetahui respon genotipe jagung terhadap naungan berdasarkan tujuh indikator cekaman yaitu produktivitas rata-rata (MP), produktivitas rata-rata geometrik (GMP), toleransi (Tol), indeks kepekaan cekaman (SSI), indeks toleransi cekaman (STI), indeks stabilitas hasil (ISH) dan indeks harmonik (IH). Percobaan dilakukan dengan menggunakan rancangan acak kelompok dua lingkungan dengan tiga ulangan. Lingkungan pertama sebagai kontrol yaitu tanpa ada perlakuan naungan (N0), sedangkan lingkungan kedua diberi perlakuan naungan menggunakan paranet 35% (N1). Hasil penelitian menunjukkan adanya dua genotipe jagung hibrida silang tiga jalur yang toleran naungan 35% dan produksi tinggi yaitu STJ02 dan STJ07. Karakter Yo dan Ys berkorelasi positif dan signifikan dengan MP, GMP dan STI, sehingga ketiga indeks ini dijadikan sebagai indeks toleransi terbaik untuk mengukur tingkat toleransi genotip jagung terhadap cekaman naungan paranet 35%. Analisis komponen utaman mengklasifikasikan genotip menjadi dua komponen utama, dengan eigen value >1 dan berkontribusi terhadap variabilitas antar genotip sebesar 99.77%. PC1 berkontribusi sebesar 61.73% dari karakter indeks TOL, SSI dan KH. Analisis klaster berdasarkan indeks toleransi membagi genotipe menjadi dua kelompok, menunjukkan variabilitas genetik yang cukup stabil sehingga bisa dijadikan dasar untuk memilih dan mengembangkan genotip jagung silang tiga jalur toleran cekaman naungan
Corresponding Author Track Homology Modeling Epitopes of Kirsten Rat Sarcoma (KRAS) G12D, G12V and G12R as Pancreatic Ductal Adenocarcinoma Vaccine Candidates
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Game Edukasi Pengenalan Bahasa Inggris Untuk Anak Usia Dini
No full textEarly childhood is a child who is at the age of 0-6 years, which is a very important age for child development or what is commonly called the golden period. Early childhood are in the most rapid stages of growth and development, both physically and mentally and they are learning in their own way. Currently, early childhood children are more interested in games that are on Android phones than other traditional games. They will also find it easier to remember something they like, and there are forms or writing that have interesting features and colors and are communicative and fun. Educational games are very interesting applications to be developed to overcome this problem. The advantages of educational games compared to conventional educational methods are to increase logic and understanding of a problem visually, and improve memory so that children can store subject matter for a longer time. The author makes an educational game on the introduction of English based on the Android operating system, with the hope that children can immediately use the game application and gain more knowledge and change learning patterns so that they are not bored and bored. This educational game for introducing English for early childhood consists of a menu for letter recognition, number recognition, animal recognition, counting and assessment. The benefit to be achieved from this research is to change conventional learning methods to simulated learning methods with mobile-based educational game media and to help students develop creativity because educational games have elements of challenge, accuracy, reasoning and ethics. If the child only knows English from where he is studying, it will take a long time for the child to memorize numbers, letters, and words in English. The existence of this educational game can be a fun and portable media to introduce English. So that children do not feel that they are learning but are playing words in English which can be done by themselves anytime at home. Children can learn on their own while playing at home so that children will memorize faster and get to know English well. Keywords : educational game, childhood, english, androi
PENGARUH VARIABEL INTERNAL DAN EKSTERNAL PERUSAHAAN TERHADAP RISIKO SISTEMATIS SAHAM PADA KONDISI PASAR YANG BERBEDA (STUDI PADA SAHAM-SAHAM ILQ 45 DI BURSA EFEK JAKARTA)
No full textABSTRAK Fluktuasi harga saham di pasar modal sebagai cerminan ketidakpastian kondisi pasar secara langsung maupun tidak akan berpengaruh terhadap pertimbangan investor dalam mengambil keputusan investasi. Investor yang rasional, pengambilan keputusan investasi didasarkan pada penilaian return maupun risiko yang terkandung dalam alternatif investasi. Penelitian ini bertujuan untuk mengetahui pengaruh kondisi internal dan eksternal perusahaan terhadap risiko sistematis saham pada kondisi pasar yang berbeda. Data yang digunakan adalah data sekunder berupa data laporan keuangan harga saham. Populasi penelitian adalah seluruh emiten yang masuk dalam perhitungan indeks LQ45 selama periode 1999 sampai 2003. Pengambilan sampel dilakukan dengan teknk purposive sampling dan menghasilkan 15 emiten yang memenuhi syarat ditetapkan sebagai sampel. Dengan melakukan analisis regresi linier berganda terhadap variabel penelitian, diperoleh hasil bahwa secara simultan variabel-variabel internal dan eksternal perusahaan berpengaruh terhadap risiko sistematis saham pada kondisi pasar bullish maupun bearish. Secara parsial, variabel TATO, DER, ROI, PER berpengaruh secara signifikan terhadap risiko sistematis saham pada kondisi pasar bullish, dengan variabel TATO yang dominan mempengaruhi. Sedangkan pada kondisi pasar bearish, variabel CR, TATO, DER, PER, PBV, dan AS berpengaruh secara signifikan terhadap risiko sistematis saham, dengan variabel AS yang dominan mempengaruhi. Kata kunci: risiko sistematis, pasar bullish, pasar bearish ABSTRACT Fluctuation of stock price in the capital market as an indicator of uncertainty market, it can influence any investment decision of investors. Any rational investors, their investment decisions are based on return valuation and risk assessment in any investment alternatives. This research aimed to analyze effects of internal and external variables on the systematic risk of stock at different condition of market. Secondary data used ion this research are financial report of stock price. Research population is all of emiten which involve in calculation of LQ45 indexes during periode of 1999 – 2003. Purposive sampling is used in this research and result in 15 emiten as a research sample. Results of research show that internal and external variables simultaneously influence the systematic risk of stock at the bullish market and bearish market. Partially, variables of TATO, DER, ROI, PER significantly influence the systematic risk of stock at bullish market, the dominant variable is TATO. At the bearish market condition, variables of CR, TATO, DER, PER, PBV, and AS significantly influence the systemnatic risk of stock, the dominant variables is AS. Keywords: systematic risk, bullish market, bearish market.</p
Keragaman Genetik Inbrida Jagung QPM dan Provit-A Berdasarkan Marka SSRs (Simple Sequence Repeats)
No full textInformation on genetic diversity of QPM and Provit-A maize germplasm is important to support breeding program, in order to form a high yielding maize hybrid. Simple sequence repeats (SSR) have been extensively utilized as genetic markers to study the genetic diversity, cultivar identification, and gene mapping. The objectives of this research were to investigate the genetic diversity and to obtain information the genetic relationship among 20 maize accessions using 29 SSRs. The research was carried out at the Moleculer Biology Laboratory of Indonesian Cereals Research Institute (ICERI) in Maros, South Sulawesi. Twenty nine polymorphic primers that covered the 10 maize chromosomes were used to fingerprint the genotype of the lines, detecting 83 allels, with an average allel number of 3 allels per locus, ranging from 2 to 6 alleles per locus. The results indicated that polymorphism information content (PIC) ranged from 0.10 (nc133 and phi072) to 0.74 (phi064) with the average of 0.45. Genetic distance based on genetic similarity estimate ranged from 0.39 to 0.92. The high level of PIC values and wide genetic distances indicated the large variability among maize germplasm. Cluster analysis divided the 20 maize accessions into three groups. Coefficient cofenetic value (r) was 0.85 indicated a good fit based on the genetic similarity value. As many as 30 inbred heterotic recombinants were derived by incorporating 20 QPM and Provit-A with genetic distance of ≤0.65. The SSRs proved to be reliable and is practical technique for revealing the relationship among specialty maize genotypes.</jats:p
