Biskuit ubi jalar ungu merupakan salah satu produk diversifikasi pangan lokal yang memiliki potensi sumber daya alam khususnya pemanfaatan ubi jalar ungu. Penggunaan tepung lokal akan menghasilkan biskuit dengan karakteristik berbeda dari biskuit yang berbahan dasar tepung terigu sehingga penggunaan biskuit dengan suhu dan waktu pemanggangan yang berbeda akan mempengaruhi karakteristik yang dihasilkan. Penelitian ini bertujuan untuk untuk mengetahui pengaruh suhu dan waktu pemanggangan terhadap karakteristik fisikokimia dan organoleptik serta sekaligus sebagai olahan makanan yang memiliki nilai fungsional. Hasil penelitian menunjukkan faktor suhu dan waktu pemanggangan biskuit ubi jalar ungu berpengaruh nyata terhadap warna, rasa, tekstur, kadar air, kadar abu, kadar lemak, kadar serat kasar dan kadar karbohidrat. Perlakuan terbaik dihasilkan pada suhu pemanggangan 150°C dan waktu pemanggangan 10 menit dengan kadar air 2,86%, kadar lemak 5,54%, dan kadar karbohidrat 88,85%. Sedangkan perlakuan terbaik pada uji hedonik didapatkan pada suhu pemanggangan 150°C dan waktu pemanggangan 10 menit dengan aroma 3,29 (netral), warna 3,14 (netral), dan rasa 3,27 (netral). Hal ini diduga karena panelis cenderung lebih menyukai aroma yang tidak coklat, warna yang lebih khas dan rasa yang tidak pahit.Effect of Baking Temperature and Time on The Quality of Physical, Chemical, and Organoleptic in Purple Sweet Potato BiscuitsPurple sweet potato biscuits are one of the diversified local food products with natural resource potential, especially the use of purple sweet potatoes. The use of local flour will produce biscuits with different characteristics from biscuits made from wheat flour so that the use of biscuits with different baking temperatures and times will affect the resulting characteristics. This study aims to determine the effect of temperature and roasting time on physicochemical and organoleptic characteristics and food processing that has functional value. The results showed that the temperature and roasting time of purple sweet potato biscuits significantly affected the color, taste, texture, moisture content, ash content, fat content, crude fiber content, and carbohydrate content. The best treatment was produced at a roasting temperature of 150 °C and 10 minutes roasting time with a water content of 2.86%, a fat content of 5.54%, and a carbohydrate content of 88.85%. At the same time, the best treatment in the hedonic test was obtained at a roasting temperature of 150 ° C and baking time of 10 minutes with an aroma of 3.29 (neutral), color 3.14 (neutral), and taste 3.27 (neutral). This is presumably because the panelists tended to prefer non-brown scents, a more distinctive color, and a less bitter taste.
Strawberry is one of the most popular tropical fruits in Indonesia. The fruit has a concise shelf life and quickly deterioration after harvesting due to mechanical injury, physiological disorders, water loss, fungal growth, and high respiration rates. Postharvest technology is one technique that can maintain fruit quality and extend shelf life, one of which is a coating technique called edible coating. The edible coating layer of corn starch with the addition of curry leaf extract has antibacterial activity that can inhibit the growth rate of microorganisms. This study aimed to determine the characteristics of the edible coating solution produced from corn starch with the addition of curry leaf extract to produce the best edible coating layer. This study used a factorial completely randomized design experimental method, which consisted of treatment with curry leaf extract concentration (8%, 10%, and 12%) and dipping time (4, 5, and 6 minutes) with three repetitions. The result showed a significant delay in weight loss and total dissolved solids in strawberries compared to the uncoated control strawberries. In addition, the edible coatings had positive results in organoleptic based on panelists’ acceptance of color, aroma, taste, texture, and overall. These findings suggest that using 8% curry leaf extract with 4 minutes dipping time could be favorable to extend the shelf-life and maintain the quality of strawberry fruit.
Abstrak. Tanaman serai wangi (Cymbopogon nardus L) merupakan salah satu jenis tanaman wewangian yang memiliki kandungan minyak atsiri yang dapat digunakan sebagai agen antibakteri. Melihat potensi antibakteri yang dimiliki minyak serai wangi, menarik untuk diformulasikan dalam suatu sediaan seperti sabun mandi sehingga dapat membantu meningkatkan nilai guna dari sabun. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan pola non faktorial yang terdiri dari 7 taraf dan 3 ulangan, yaitu konsentrasi minyak serai wangi 0 (M1), 0,5% (M2), 1% (M3), 1,5% (M4), 2% (M5), 2,5% (M6) dan 3% (M7). Analisis terhadap sabun padat transparan yang dilakukan meliputi analisis kimia (kadar air, alkali bebas dan pH), uji aktivitas antibakteri terhadap bakteri Staphylococcus aureus serta uji organoleptik secara hedonik (warna, aroma, kekerasan, transparansi, banyak busa dan after used). Hasil penelitian menunjukkan pada pembuatan sabun padat transparan dengan penambahan konsentrasi minyak serai wangi bepengaruh sangat nyata (P≤0,01) terhadap nilai kadar air, alkali bebas dan pH. Sabun padat transparan tersebut memiliki nilai kadar air 5,78%, kadar alkali bebas 0,36% dan nilai pH 11,42. Sedangkan uji efektivitas antibakteri pada sabun padat transparan minyak serai wangi mampu menghambat bakteri Staphylococcus aureus sebesar 1,64 mm pada konsentrasi 2,5%. Uji organoleptik pada sabun padat transparan minyak serai wangi tidak berpengaruh nyata terhadap warna, aroma, kekerasan, transparansi, banyak busa dan after used. Hasil penelitian menunjukkan bahwa sabun padat transparan dengan penambahan minyak serai wangi 2,5% adalah perlakuan terbaik.Quality Characteristic, Organoleptic and Antibacterial Activity Transparent Solid Soap with Addition Citronella Oil Abstract. Citronella plant (Cymbopogon nardus L) is a type of fragrance plant that contains essential oils that can be used as antibacterial agents. Seeing the antibacterial potential of lemongrass oil, it is interesting to formulate it in a preparation such as bath soap so that it can help increase the useful value of soap. This study used a completely randomized design (CRD) with a non-factorial pattern consisting of 7 levels and 3 replications, namely the concentration of citronella oil 0 (M1), 0.5% (M2), 1% (M3), 1.5%. (M4), 2% (M5), 2.5% (M6) and 3% (M7). The analysis of transparent solid soap includes chemical analysis (moisture content, free alkali and pH), antibacterial activity test against Staphylococcus aureus bacteria and hedonic organoleptic tests (color, aroma, hardness, transparency, lots of foam and after use). The results showed that the making of transparent solid soap with the addition of citronella oil concentration had a very significant effect (P≤0.01) on the value of water content, free alkali and pH. The transparent solid soap has a moisture content value of 5.78%, free alkaline content of 0.36% and a pH value of 11.42. While the antibacterial effectiveness test on the transparent solid soap of citronella oil was able to inhibit Staphylococcus aureus bacteria by 1.64 mm at a concentration of 2.5%. Organoleptic test on transparent solid soap of citronella oil had no significant effect on color, aroma, hardness, transparency, amount of foam and after use. The results showed that the transparent solid soap with the addition of 2.5% citronella oil was the best treatment.
Rumput laut memiliki senyawa hidrokoloid seperti karagenan, agar, dan alginat yang dapat dimanfaatkan sebagai senyawa pengemulsi dan pengental dalam industri makanan, jelly, ice cream, roti (bakery), kosmetik, obat-obatan, selai, dan tekstil. Karagenan yang bersifat hidrokoloid menjadikannya berpotensi dikembangkan sebagai bahan dasar pembuatan edible film. Edible film merupakan kemasan primer yang berupa lapisan tipis yang berfungsi sebagai pelapis bahan pangan. Penggunaan edible film ini juga dapat mengurangi penggunaan plastik kemasan pembungkus pada bahan pangan. Penelitian ini bertujuan untuk menentukan komposisi terbaik dalam proses pembuatan edible film dari rumput laut dengan penambahan dengan konsentrasi ekstrak karagenan yang berbeda-beda dan mempelajari karakteristik edible film yang dihasilkan. Rumput laut yang digunakan berbentuk semi basah dengan konsentrasi 20% (K1) dan 30% (K2). Ketebalan edible film rumput laut E. cottonii menunjukkan bahwa semakin tinggi konsentrasi rumput laut yang ditambahkan maka ketebalan film yang dihasilkan akan semakin tinggi (K2). Pengujian transparansi menunjukkan bahwa semakin besar konsentrasi rumput laut yang ditambahkan (K2) maka nilai transmitan film semakin rendah (1,16% pada panjang gelombang 700 nm) dan mengindikasikan bahwa tingkat transparansi semakin tinggi. Hasil kadar air edible fil yang terbaik adalah 21,16%, nilai kuat tarik sebesar 0,74 MPa dan young modulus sebesar 0,013 kg/mm2.
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