scholarly journals Effects of Gel Amount and Mastication on the Velocity of Agar and Gelatin Gels Passing through the Pharynx

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Madeleine Djabourov
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Soft Matter ◽  
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Vol 6 (19) ◽  
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Valéry Normand
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2020 ◽  
Vol 101 ◽  
pp. 105537 ◽  
Author(s):  
Xiangjun Li ◽  
Xiang Liu ◽  
Keqiang Lai ◽  
Yuxia Fan ◽  
Yongle Liu ◽  
...  

Processes ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 36 ◽  
Author(s):  
Sanaz Khalighi ◽  
Ralf G. Berger ◽  
Franziska Ersoy

The native extractable arabinoxylans (AX) from wheat bran were cross-linked by the commercial laccase C (LccC) and self-produced laccases from Funalia trogii (LccFtr) and Pleurotus pulmonarius (LccPpu) (0.04 U/µg FA, each). Dynamic oscillation measurements of the 6% AX gels demonstrated a storage modulus of 9.4 kPa for LccC, 9.8 kPa for LccFtr, and 10.0 kPa for LccPpu. A loss factor ≤ 0.6 was recorded in the range from 20 to 80 Hz for all three laccases, and remained constant for four weeks of storage, when LccFtr and LccPpu were used. Arabinoxylan gel characteristics, including high water holding capacity, swelling ratio in saliva, and heat resistance indicated a covalently cross-linked network. Neither the mediator compounds caffeic acid and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS), nor citrus pectin, enhanced the elastic properties of the gels. Using laccases as an oxidant provided gels with a solid and stable texture, comparable in firmness to traditional gelatin gels. Thus, AX gels can be presented in the vegan, halal, and kosher food markets. They may also find use in pharmaceutical and other industrial applications.


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