scholarly journals CINÉTICA DE SECAGEM E PROPRIEDADES DE COZIMENTO DE MASSA DE ARROZ

Author(s):  
Fernanda Suzana de Bona ◽  
Ana Paula Biz ◽  
Darlene Cavalheiro ◽  
Cleiton Vaz ◽  
Georgia Ane Raquel Sehn
Keyword(s):  

A produção de massas alimentícias gluten free é um desafio para a indústria de alimentos, pois busca-se substituir a rede de glúten formada pelas proteínas do trigo por outras fontes de cereais sem glúten, visando produtos finais com qualidade tecnológica. O objetivo deste estudo foi produzir massas alimentícias a base arroz, secas em baixa (60 °C) e alta temperatura (100 °C), e avaliar a melhor formulação com base nas propriedades de cozimento e textura.  Foram desenvolvidas cinco formulações de massas alimentícias com diferentes proporções de farinha e amido de arroz (F:A): 100:0, 75:25, 50:50, 25:75, 0:100. As curvas de secagem foram obtidas e diferentes modelos matemáticos, amplamente utilizados na secagem de cereais, foram ajustados aos dados. Em relação à cinética de secagem, os modelos matemáticos de Midilli e Page apresentaram a melhor correlação com os dados experimentais (R²>0,94). Massas com maiores proporções de farinha de arroz apresentaram menores tempos de cozimento e maiores firmezas. As amostras secas a 100 °C apresentaram as menores perdas de sólidos na água de cozimento, sendo esse um parâmetro importante para definir a qualidade das massas alimentícias. A partir dos resultados obtidos observou-se que para fins de produção de massas glúten free base arroz, as formulações com proporções de farinha e amido de arroz 75:25 e 50:50 secas em alta temperatura (100 °C) e com 100% de farinha de arroz seca a baixa temperatura (60 °C) seriam as mais indicadas.

Author(s):  
M. Locke ◽  
J. T. McMahon

The fat body of insects has always been compared functionally to the liver of vertebrates. Both synthesize and store glycogen and lipid and are concerned with the formation of blood proteins. The comparison becomes even more apt with the discovery of microbodies and the localization of urate oxidase and catalase in insect fat body.The microbodies are oval to spherical bodies about 1μ across with a depression and dense core on one side. The core is made of coiled tubules together with dense material close to the depressed membrane. The tubules may appear loose or densely packed but always intertwined like liquid crystals, never straight as in solid crystals (Fig. 1). When fat body is reacted with diaminobenzidine free base and H2O2 at pH 9.0 to determine the distribution of catalase, electron microscopy shows the enzyme in the matrix of the microbodies (Fig. 2). The reaction is abolished by 3-amino-1, 2, 4-triazole, a competitive inhibitor of catalase. The fat body is the only tissue which consistantly reacts positively for urate oxidase. The reaction product is sharply localized in granules of about the same size and distribution as the microbodies. The reaction is inhibited by 2, 6, 8-trichloropurine, a competitive inhibitor of urate oxidase.


1964 ◽  
Vol 47 (6) ◽  
pp. 573-589 ◽  
Author(s):  
W.C. MacDonald ◽  
L.L. Brandborg ◽  
A.L. Flick ◽  
J.S. Trier ◽  
C.E. Rubin

1965 ◽  
Vol 48 (2) ◽  
pp. 155-172 ◽  
Author(s):  
I. Michael Samloff ◽  
John S. Davis ◽  
Eric A. Schenk

2001 ◽  
Vol 5 (8) ◽  
pp. 609-616 ◽  
Author(s):  
Viviane Aranyos ◽  
Johan Hjelm ◽  
Anders Hagfeldt ◽  
Helena Grennberg
Keyword(s):  

2011 ◽  
Author(s):  
Jessica L. Becraft ◽  
Natalie Rolider ◽  
Nicole L. Hausman

2007 ◽  
Vol 37 (15) ◽  
pp. 34
Author(s):  
DIANA MAHONEY
Keyword(s):  

2020 ◽  
Vol 29 (12) ◽  
pp. 59-63
Author(s):  
O.I. Parakhina ◽  
◽  
M.N. Lokachuk ◽  
L.I. Kuznetsova ◽  
E.N. Pavlovskaya ◽  
...  

The research was carried out within the framework of the theme of state assignment № 0593–2019–0008 «To develop theoretical foundations for creating composite mixtures for bakery products using physical methods of exposure that ensure homogeneity, stability of mixtures and bioavailability of nutrients, to optimize diets population of Russia». The data on the species belonging of new strains of lactic acid bacteria and yeast isolated from samples of good quality gluten-free starter cultures are presented. A comparative assessment of the antagonistic and acid-forming activity of strains of lactic acid bacteria and the fermentative activity of yeast was carried out. The composition of microbial compositions from selected strains of LAB and yeast was developed. The influence of the starter culture on the new microbial composition on the physicochemical, organoleptic indicators of the bread quality and resistance to mold and ropy-disease was investigated.


2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Bernaulli Putri Mulyanto ◽  
Yustina Wuri Wulandari ◽  
Akhmad Mustofa

      Brownies merupakan cake coklat yang terbuat dari tepung terigu, lemak, telur, gula pasir dan coklat. Metode pemasakan brownies ada dua yaitu pemanggangan dan pengukusan. Penelitian ini menggunakan tepung jewawut dan tepung maizena agar dihasilkan brownies kukus bebas gluten. Penelitian ini bertujuan untuk mengetahui formulasi tepung yang memiliki kadar protein tertinggi pada brownies dan untuk mengetahui lama pengukusan yang optimal sehingga menghasilkan brownies kukus tepung jewawut dan tepung jagung yang paling disukai. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua faktorial yaitu faktor pertama ratio tepung jewawut dan tepung jagung (50:50, 40:60 dan 30:70), sedangkan faktor kedua lama pengukusan (30 menit, 40 menit dan 50 menit). Hasil penelitian menunjukkan Brownies kukus tepung jewawut dan tepung jagung dengan ratio 50:50 dan lama pengukusan 50 menit merupakan ratio yang terbaik karena memiliki kadar protein paling tinggi yaitu 5.828%.  Pada perlakuan ini menghasilkan 19.967% kadar air, 1.585% kadar abu, 1.786% gula total, serta uji organoleptik terhadap warna 3.590 (coklat gelap), tekstur 3.340 (lembut), flavor jewawut 2.855 (sedikit terasa) dan kesukaan keseluruhan 3.285 (disukai). Kata kunci : Brownies, tepung jewawut, tepung jagung, kadar protein.  ABSTRACT      Brownies is chocolate cakes made from flour, fat, eggs, sugar and chocolate. There are two methods of cooking brownies namely roasting and steaming. This study uses millet flour and maizena flour to produced gluten free steamed brownies. This study aims to determine the best of flour formulated which has highest protein content in steamed brownies and to knew the optimal steaming time that produced the most favored  of  steamed brownies millet flour and  corn flour. This study used a completely randomized design (CRD) with two factorials, the first factor is ratio of millet flour and corn flour (50:50, 40:60 and 30:70), while the second factor was the duration of steaming process (30, 40 and 50 minutes). The result of the study showed steamed flour of millet flour and corn flour with ratio of 50:50 and with steamed process duration 50 minutes is the best ratio because it had the highest protein content of 5.828%.  In this treatment yielded 19.97% moisture content, 1.585% ash content, 1.786% total sugar and organoleptic test is 3.590 (dark chocolate) colors, 3.340 (soft) texture, 2.855 (slightly felt) millet flavors and 3.285 (preferred) overall preferences. Keywords :  Brownies, millet flour, corn flour, protein content


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