Hydrodynamic alignment and microfluidic spinning of strength-reinforced calcium alginate microfibers

Calcium alginate microfibers with spindle-knots are fabricated by combining microfluidic technique with wet-spinning method. The structures of the knots can be conveniently regulated by changing the two-phase flow rate ratio and the micropipette diameter.

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Kinetic Investigation of Hg(II) Photoreduction using TiO2-immobilized on Calcium Alginate Beads: Effect of Ferric ion and Organic Compound

Int'l Conf. on Chemical Engineering & Advanced Computational Technologies (ICCEACT’2014) Nov. 24-25, 2014 Pretoria (South Africa) ◽

10.15242/iie.e1114006 ◽

2014 ◽

Keyword(s):

Organic Compound ◽

Calcium Alginate ◽

Alginate Beads ◽

Ferric Ion ◽

Kinetic Investigation ◽

Calcium Alginate Beads

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A Dual Sensor for Biogenic Amines and Oxygen Based on Genipin Immobilized in Edible Calcium Alginate Gel Beads

10.26434/chemrxiv.12252323 ◽

2020 ◽

Author(s):

Ian Mallov ◽

Fiona Jeeva ◽

Chris Caputo

Keyword(s):

Biogenic Amines ◽

Calcium Alginate ◽

Alginate Beads ◽

Colorimetric Sensing ◽

Naturally Occurring ◽

Gel Beads ◽

Dual Sensor ◽

Calcium Alginate Gel ◽

Toxic Food

Food is often wasted due to real or perceived concerns about preservation and shelf life. Thus, precise, accurate and consumer-friendly methods of indicating whether food is safe for consumers are drawing great interest. The colorimetric sensing of biogenic amines released as food degrades is a potential way of determining the quality of the food. Herein, we report the use of genipin, a naturally occurring iridoid, as a dual colorimetric sensor for both oxygen and biogenic amines. Immobilization of genipin in edible calcium alginate beads demonstrates that it is a capable sensor for amine vapors and can be immobilized in a non-toxic, food-friendly matrix.

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Nitrification and Autotrophic Denitrification in Calcium Alginate Beads

Water Science & Technology ◽

10.2166/wst.1987.0199 ◽

1987 ◽

Vol 19 (1-2) ◽

pp. 175-182 ◽

Cited By ~ 16

Author(s):

Z. Lewandowski ◽

R. Bakke ◽

W. G. Characklis

Keyword(s):

Calcium Carbonate ◽

Calcium Ions ◽

Continuous Flow ◽

Calcium Alginate ◽

Microbial Respiration ◽

Flow System ◽

Alginate Beads ◽

Alginate Gel ◽

Gel Beads ◽

Calcium Alginate Gel

Immobilization of nitrifiers and autotrophic denitrifiers (Thiobacillus denitrificans) within calcium alginate gel was demonstrated. Calcium carbonate reagent was immobilized along with bacteria as the stabilizing agent. Protons released as a result of microbial respiration reacted with calcium carbonate producing calcium ions which internally stabilized the calcium alginate gel. The microbially active gel beads were mechanically stable and active for three months in a continuous flow system without addition of calcium.

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