scholarly journals Chemical and sensory characteristics of white sweet potato (Ipomoea batatas L.), rice (Oryza sativa L.), and tapioca (Manihot esculenta) flours - based seasoning composite flour

Author(s):  
N N A Alfani ◽  
D Ishartani ◽  
C Anam ◽  
D Praseptiangga ◽  
G J Manuhara
2021 ◽  
Vol 22 (2) ◽  
Author(s):  
ISWIYANTI NOVITA ◽  
OEDJIJONO OEDJIJONO ◽  
ARI ASNANI

Abstract. Novita I, Oedjijono, Asnani A. 2021. The characteristics of fermented purple sweet potato (Ipomoea batatas) and black rice (Oryza sativa) using UV-irradiated Monascus purpureus. Biodiversitas 22: 684-690. This research aimed to produce Monascus fermented product (MFP) with purple sweet potato (Ipomoea batatas (L.) Lam.) and black rice (Oryza sativa L.) using UV-irradiated Monascus purpureus Went and evaluated the characteristic of its antibacterial activity against Salmonella typhi. M. purpureus was irradiated with UV at l254 nm for 0, 2, 3, and 4 min. The solid-state fermentation process was carried out for 7, 14, and 21 days. The pigments were measured at l390 nm for yellow and l500 nm for red. The ethanol extracts of MFP were analyzed for their antibacterial activity against S. typhi using the Kirby–Bauer method. The results showed that the highest yield of MFP was obtained from MFP–black rice (51.88%) that used UV-irradiated M. purpureus for 2 min and fermentation for 21 days. The highest absorbance value of MFP–purple sweet potato was obtained from UV-irradiated M. purpureus for 3 min, whereas the highest absorbance value of MFP–black rice was obtained with UV-irradiated M. purpureus for 2 min. Ethanol extracts of both MFP3–purple sweet potato and MFP2–black rice showed antibacterial activities against S. typhi with minimum inhibitory concentration values of 0.2 and 0.15 g/mL, respectively. Thin-layer chromatography analysis of the ethanol extract from MFP2–black rice revealed the presence of bioactive saponin and flavonoid. These findings suggest that UV-irradiated M. purpureus was able to use both purple sweet potato and black rice substrates to produce MFP with antibacterial activity against S. typhi.


2021 ◽  
pp. 177
Author(s):  
Ika Maruya Kusuma ◽  
Samha Aunillah ◽  
Yayah Siti Djuhariah

Umbi ubi jalar ungu (Ipomoea batatas (L.) Lam.) dan beras putih (Oryza sativa L.) diketahui memiliki aktivitas antioksidan. Penelitian ini bertujuan untuk membuat sediaan krim lulur scrub dari ekstrak etanol ubi jalar ungu dan mengetahui formula yang paling disukai. Umbi ubi jalar ungu diekstraksi dengan pelarut etanol 70% hingga menjadi ekstrak kental. Ekstrak kental tersebut kemudian diformulasikan menjadi sediaan krim lulur scrub yang terbagi atas 3 formula dengan variasi konsentrasi ekstrak  yaitu konsentrasi 2% (FI), 4% (FII) dan 6% (FIII) yang masing masing formula ditambahkan serbuk beras putih sebagai bahan scrub. Evaluasi krim lulur scrub meliputi evaluasi mutu  fisik (uji organoleptis, homogenitas, tipe krim, daya sebar, viskositas, sifat alir), uji pH, uji stabilitas dipercepat dengan metode cycling test dan uji hedonik (aroma, tekstur, warna, kesan lengket). Hasil evaluasi mutu fisik dan uji stabilitas menunjukkan krim lulur scrub yang diperoleh memiliki mutu dan stabilitas fisik yang baik. Hasil uji hedonik menunjukkan formula I merupakan formula yang paling disukai.


Author(s):  
Nizar Ria ◽  
Dekie Rawung ◽  
Erny J. N. Nurali

AbstractThe objectives of this study were to analyze the composition and sensory quality of the crust pie made of composite flour of goroho and yellow sweet potato. This study was conducted in a completely randomized design with 4 different composition ratio of goroho plantain flour to yellow sweet potato flour, i.e., A (80% : 20%), B (70%: 30%), C (60%: 40%), and D (50% : 50%). The results of the study showed that the chemical composition of pie crust were in a range of 2.87% - 4.74% for moisture content, 2.66% - 2.72% for ash content, 32.10% - 32.95% for fat content, 5.90% - 6.06% for protein content, 3.76% - 4.77% for crude fiber, and 50.04% - 55.50% for carbohydrates content. The pie crust made from composite flour 50% goroho : 50% yellow sweet potato was the most preferred by panelists in terms of color, aroma, taste and texture with a value of 3.89 (like).Keywords: pie crust, composite flour, goroho plantain, sweet potato


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