Judul: The Influence of Slaughter Methods on Stress Level and Meat Hemoglobin Level Based on Colorimetric Analysis
Abstrak: Daging sapi merupakan komoditas ketahanan pangan domestik yang permintaannya meningkat setiap tahun dan diperhatikan kualitasnya melalui uji kesempurnaan pengeluaran darah. Terdapat dua metode penanganan penyembelihan, yaitu stunning dan non stunning. Penelitian ini bertujuan untuk mengetahui perbandingan kadar hemoglobin daging dan diferensial leukosit dari sapi yang disembelih stunning dan non-stunning. Sampel yang digunakan adalah 9 daging sapi dan 9 darah sapi dari sapi yang berbeda-beda. Daging sapi diekstraksi dan diuji Malachite Green untuk menentukan kesempurnaan pengeluaran darah. Ekstrak daging kemudian diukur kadar hemoglobinnya menggunakan spektrofotometer, scanner, dan kamera ponsel. Hasil citra/gambar yang didapat dari scanner dan kamera ponsel kemudian diolah menggunakan ImageJ. Sampel darah yang diambil kemudian dihitung leukosit dan rasio neutrofil-limfositnya. Hasil dianalisis menggunakan SPSS. Hasil pengukuran hemoglobin menggunakan spektrofotometer BOECO, spektrofotometer Vernier, scanner, dan kamera ponsel dari sampel stunning berturut-turut adalah 7,0±2,5; 5,7±1,8; 10,2±3,0; 3,1±2,0 dan dari sampel non stunning berturut-turut adalah 3,5±1,5; 2,7±0,5; 10,5±2,2; 2,9±0,5. Perbandingan kadar hemoglobin antara kedua sampel tidak menunjukkan perbedaan yang signifikan. Jumlah leukosit menunjukkan perbedaan yang nyata dan lebih tinggi dari kadar normal. Scanner dan kamera ponsel memiliki potensi baik sebagai alternatif pengganti spektrofotometer untuk kolorimetri., Beef is domestic food security commodity whose demand is increasing every year and its quality is considered through a bleeding perfection test. Two methods of handling slaughter are stunning and non stunning. This study aims to determine the comparison of the hemoglobin content of meat and the differential of leukocytes from stunning and non-stunning slaughtered cows. The samples used were 9 beef and 9 beef blood from different cows. The beef is extracted and tested with Malachite Green to determine the perfection of blood drainage. The meat extract was measured for its hemoglobin level using spectrophotometer, scanner, and cell phone camera. The results of the image from scanner and phone cameraii are then processed using ImageJ. The blood samples were counted for leukocytes and neutrophil-limphocyte ratio. The results were analyzed on SPSS. The results of hemoglobin measurements using the BOECO spectrophotometer, Vernier spectrophotometer, scanner, and phone camera from stunning samples were 7,0±2,5; 5,7±1,8; 10,2±3,0; 3,1±2,0 and from non-stunning samples, 3,5±1,5; 2,7±0,5; 10,5±2,2; 2,9±0,5 that showed no significant difference. Leukocyte total showed a signifficant difference and also higher than normal. Scanner and cell phone cameras have good potential as an alternative to spectrophotometers for colorimetry.
Keyword: beef, colorimetry, leukocyte, non stunning, neutrophile-limphocyte ratio, stunning

Judul: Digital Image Processing for the Analysis of Completeness Bleeding Process of Femoral Layer Based on Colorimetry
Abstrak: Kasus penjualan daging ayam bangkai atau dengan proses pemotongan yang tidak sempurna sangat merugikan masyarakat karena keberadaan darah dalam daging menyebabkan kualitas karkas menurun dan daging cepat membusuk. Hal ini mengakibatkan aspek keamanan dan kehalalan daging menjadi tidak terjamin. Penelitian ini bertujuan menganalisis penggunaan pengolahan citra digital yang dibandingkan dengan alat spektrofotometer dalam mengukur konsentrasi darah pada daging ayam layer dengan perlakuan yang berbeda. Ekstrak sampel daging direaksikan dengan malachite green dan H2O2 diuji menggunakan spektrofotometer, scanner dan kamera telepon genggam. Hasil gambar diolah menggunakan ImageJ dan dianalisis menggunakan uji T pada aplikasi SPSS. Konsentrasi darah dalam daging ayam dengan perlakuan sembelih tanpa digantung lebih tinggi dibandingkan dengan perlakuan sembelih digantung. Ini juga menunjukkan hasil yang signifikan (P<0,05) baik diukur dengan menggunakan spektrofotometer maupun scanner dan kamera telepon genggam. Uji korelasi spektrofotometer A–spektrofotometer B, spektrofotometer A-scanner dan spektrofotometer A-kamera telepon genggam terhadap larutan standar yaitu 0,9972; 0,9757 dan 0,9702 yang menunjukkan adanya hubungan erat. Berdasarkan hasil tersebut scanner dan kamera telepon genggam dapat digunakan sebagai alat pengolahan citra digital dalam menganalisis kesempurnaan pengeluaran darah., The case of the sale of chicken carcasses or with imperfect slaughtering process is very detrimental for the community because the blood existence in the meat causing the decrease quality of carcasses and the meat quickly to rot. These aspects affect to safety and halal meat become unsecured. The study aimed to analyze the use of digital image processing compared with spectrophotometer in measuring the blood concentration on chicken meat layer with different treatments. Meat sample extracts reacted with malachite green and H2O2 were analyzed using spectrophotometer, scanner and mobile phone camera. The images were processed using ImageJ and analyzed using T test in SPSS application. The concentration of blood in chicken meat with non hanging slaughter treatment is higher than a hanged one. It is also indicated the significant result (P<0,05) both measured using spectrophotometer as well as scanner and mobile phone camera. The correlation test of spectrophotometer A–spectrophotometer B, spectrophotometer A-scanner and spectrophotometer A-mobile phone camera against the standard solution was 0,9972; 0,9757 and 0,9702 which show a close relationship. Based on these results, scanner and mobile phone camera can be used as an digital image processing tools in analyzing the completeness bleeding process of blood.
Keyword: blood drain, colorimetry, layer, mobile phone camera, scanner

Judul: : Persamaan Tunggal sebagai Representasi Kurva Komposit
Abstrak: A mathematical method is introduced to represent a composite curve based on an extension of analytic geometry. The representation is given either with a single equation or with two equations, in the case of parametric representation. This method permits the representation of composite curves in similar manner to the conventional representation of non-composite curves. Some mathematical tools, including Heaviside unit step function and periodizer function, are used in the establishment of a single equation. In this paper, regular equations of regular and irregular polygon, as well as composite curves of two dimensions, are implemented using a computer algebraic system, Mathematica.
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