Judul: Perbandingan Karakteristik Fisikokimia Tempe Dengan Tempe Kecambah Kedelai
Abstrak: Tempe adalah salah satu makanan tradisional Indonesia hasil fermentasi kedelai. Inovasi diperlukan untuk meningkatkan kualitas tempe, baik secara fisik maupun kimia. Penduduk Indonesia gemar mengonsumsi tempe karena beberapa alasan, yaitu harganya relatif murah dan nilai gizinya tinggi. Salah satu proses yang dapat meningkatkan mutu gizi dan kualitas tempe adalah dengan memodifikasi bahan baku tempe, yaitu mengganti kedelai dengan kecambah kedelai. Dalam penelitian ini, dipelajari perbandingan karakteristik fisikokimia tempe kedelai (TK) dan tempe kecambah kedelai (TKK). Kedelai dikecambahkan dalam waktu 28 jam. Kecambah kemudian diproses menjadi tempe (TKK). TKK dan TK dianalisis kekerasan dan sifat sensorinya. Pengeringan beku dilakukan untuk TKK dan TK selama 26 jam. Tempe kering beku digiling menjadi tepung. Tepung tempe digunakan untuk analisis fisik dan kimia. Penggunaan kecambah kedelai terbukti mempengaruhi kualitas tempe. TKK memiliki 53.37 % bk protein, 24.97 mg AEAC/100 g tempe bk kapasitas antioksidan, 5.08 mg/100 g bk, 81.75 mg/100 g bk isoflavon, dan beberapa mineral (Ca, P, Fe, Zn) yang lebih tinggi dari TK. Secara fisik, kedua jenis tempe memiliki tekstur yang sama, tetapi tepung TKK mempunyai derajat putih (72.47 %) dan densitas kamba (0.42 g/ml) yang lebih tinggi dari TK. Tepung TKK juga memiliki aktivitas air (0.63) dan repose angle (39.94o) yang lebih rendah. Hasil analisis sifat fungsional protein menunjukkan bahwa tepung TKK memiliki daya serap air (2.26 g/g), daya serap minyak (1.45 ml/g), dan kapasitas emulsi (11.42 %) yang secara signifikan lebih tinggi (p<0,05) dari tepung TK. Hasil evaluasi sensori menggunakan uji rating hedonik terhadap tempe mentah menunjukkan bahwa atribut warna dan aroma kedua jenis tempe berbeda nyata (p<0.05), sedangkan hasil evaluasi sensori pada tempe goreng menunjukkan bahwa atribut warna, aroma, rasa, dan tekstur pada kedua jenis tempe berbeda nyata (p<0.05).
Keyword: chemical characteristic, germinated soybean tempe, physical characteristic, sensory profile, soybean tempe

Judul: Karakteristik Fisikokimia dan Sifat Fungsional Tempe yang Dihasilkan dari Berbagai Varietas Kedelai
Abstrak: Tempe is an Indonesian traditional food made by fermentation of soybean by the fungus Rhizopus sp. The objective of this research was to compare physical and chemical properties of soybean and tempe made from import (Import 1, Import 2) and local (Local 1, Local 2, Local 3) soybeans. For tempe production, soybean were sorted, soaked, dehulled, cooked, and fermented. The result showed that Local 1 variety presented as the biggest size (19.53 g/100 soybean grains) and the highest cost effectiveness (0.73). Despite of those physical properties, yields of all tempe weren’t significantly different (p>0.05). Tempe made from soybean Local 1 had moisture, protein, and fat content as higher as tempe made from import soybeans. Tempe made from soybean Local 3 had the highest protein content (52.70%). The antioxidant capacity of tempe made from import and local soybeans were about 186-191 mg AEAC/g, but weren’t significantly different (p>0.05). Based on sensory evaluation of raw and fried tempe, overall tempe made from local soybeans had the same preference with tempe made from import soybeans. Tempe made from soybean Local 1 had shelf life until 2 days at room temperature and 7 days at low temperature based on sensory quality measurement.
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Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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