Ardhia Deasy Rosita Dewi
Universitas Surabaya

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THE MAKING OF RICE BRAN FLOUR-BASED SOURDOUGH BREAD Ardhia Deasy Rosita Dewi; Arnold Tjahjono
Jurnal Pangan dan Agroindustri Vol. 10 No. 1: January 2022
Publisher : Department of Food Science and Biotechnology, Faculty of Agriculture Technology, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpa.2022.010.01.4

Abstract

Sourdough is a bread made with the involvement of Lactobacillus bacteria and yeast that are naturally present in wheat flour. This study used rice bran and milk kefir grains to speed up the preparation of starters. Rice bran is used to reduce gluten content in bread as well as add nutritional value to bread. This research aims to determine the impact of the concentration of rice bran flour (0, 25, and 50% w/w of total flour) on the physical, chemical, and organoleptic parameters of sourdough. An increase in the rice bran flour concentration leads to an increase in the pH, hardness and brittleness of the bread. Besides, it also causes a decrease in lactic acid levels and bread expansion volume which makes the bread taste less sour. The results of the organoleptic analysis showed that sourdough with a concentration of 25% rice bran flour was the most preferred bread, as it is less sweet, without sour and bitter taste and a little bit salty. Moreover, it has a less unpleasant aftertaste, non-sour aroma, brown colour and it is not too soft in texture.  
IMMUNOSTIMULANT POTENTIAL OF OYSTER MUSHROOM NUGGET (Pleourotus ostreatus) Ardhia Deasy Rosita Dewi; Yayon Pamula Mukti
Jurnal Pangan dan Agroindustri Vol. 10 No. 2: April 2022
Publisher : Department of Food Science and Biotechnology, Faculty of Agriculture Technology, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpa.2022.010.02.2

Abstract

Oyster mushrooms are widely known as having high beta glucan content. Beta glucan is a water insoluble fiber that indicates an immunomodulator with increasing the activity of NK cells in the bloodstream which provides immune effect. Oyster mushroom nuggets are processed oyster mushrooms that can be proven containing the highest beta glucans. This study aims to observe the immunostimulant potential of oyster mushroom nuggets in BALB/c mice by analyzing its white blood cell profile, spleen and liver histopathology. The research method is conducted through orbital sinus of the rat's eye using a microhematocrit to count total leukocytes, lymphocytes, and granulocytes with the Delayed Type Hypersensitivity test. The 18mg/kg body weight oyster mushroom nugget can increase lymphocytes cells 7.2 ± 1.22 103/µl. It is significantly different from control group. Immunostimulatory activity also was proven with the widening of the white pulp of the spleen with the growth of young lymphocytes after being given oyster mushroom nuggets of 18 mg/kg body weight.