• Title/Summary/Keyword: k-carrageenan

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Water-Vapor Transfer Characteristics of Carrageenan-Based Edible Film (카라기난 필름의 투습 특성)

  • Rhim, Jong-Whan;Hwang, Keum-Taek;Park, Hyun-Jin;Jung, Soon-Teck
    • Korean Journal of Food Science and Technology
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    • v.28 no.3
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    • pp.545-551
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    • 1996
  • Water-vapor transmission rate and water-vapor permeability of carrageenan-based edible film with three different thicknesses of 0.05, 0.08 and 0.11 mm were measured to investigate the potential applicability of the films to powder foods at five different temperatures (20, 25, 30. 35 and $4^{\circ}C$) and three different relative humidities (50. 70 and 90% RH). Water-vapor transmission rate of the carrageenan-based film was gound to be 2.3 times higher than that of polyethylene (PE) film and water-vapor permeability of the film was 45-230 times higher than that of PE film. Water-ydpor permeability of the film seemed to increase linearly with the film thicknees like other hydrophilic edible films. Water-vapor transmission rate were found to be dependent on the temperature. Activation energies of the water-vapor transmission rate of the film were found to be between 7.898 and 12.8702 kj/mol depending on the film thickness. The water-vapor transmission rate of the film showed the typical kinetic compensation effect between activation energies and preexponential factors. which was proved by the linear increase in the value of logarithms of preecponential factor.

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Effects of Annealing on the Structural Deformation of Polyelectrolyte Complexes based on Two Anionic Polysaccharides

  • Kim, Sang-Gyun;Lee, Kew-Ho
    • Korean Membrane Journal
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    • v.10 no.1
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    • pp.39-45
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    • 2008
  • Polyelectrolyte complex based on two anionic polysaccharides, composed of sodium alginate and carrageenan, were prepared by interacting with divalent calcium ions in solution. The effects of annealing on the structural deformation of polyelectrolyte complex and on their characteristics at removing water from a methanol mixture from the point of molecular sieve were investigated and discussed. The result showed that the structural deformation of the annealed polyelectrolyte complex has an effect on the free volume between these polymer chains and the chelate segments such a shrinking of the overall morphology, which act as a molecular sieve in the separation of methanol and water mixtures.

Anti-Hyperalgesic Effects of Meloxicam Hydrogel via Phonophoresis in Acute Inflammation in Rats; Comparing Systemic and Topical Application

  • Kim, Tae-Youl;Kim, Young-Il;Seo, Sam-Ki;Kim, Soo-Hyeun;Yang, Kyu-Ho;Shin, Sang-Chul
    • Biomolecules & Therapeutics
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    • v.17 no.3
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    • pp.305-310
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    • 2009
  • The aim of this study was to determine if a meloxicam hydrogel could be administered in vivo via phonophoretic transdermal delivery using pulsed ultrasound by examining its anti-hyperalgesic effects in a rat carrageenan inflammation model. Carrageenan (1%) was injected into the plantar surface of the right hindpaw, and meloxicam hydrogel was administered via phonophoretic transdermal delivery. Changes in the mechanical and thermal hyperalgesia, as well as swelling, showed that phonophoretic delivery of meloxicam exhibited significantly better anti-hyperalgesic and anti-inflammatory effects than pulsed ultrasound. Topical and systemic application of meloxicam hydrogel using phonophoresis showed similar anti-hyperalgesic effects. These findings suggest that the transdermal administration of a meloxicam hydrogel using phonophoresis by pulsed ultrasound might be useful for treating acute inflammation.

Degradation of Raffinose Oligosaccharides in Soymilk by Immobilized ${\alpha}$-Galactosidase of Aspergillus oryzae

  • Kotiguda, Girigowda;Kapnoor, Shankar S.;Kulkarni, Dhananjay;Mulimani, Veerappa H.
    • Journal of Microbiology and Biotechnology
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    • v.17 no.9
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    • pp.1430-1436
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    • 2007
  • [ ${\alpha}$ ]-Galactosidase was immobilized in a mixture of k-carrageenan and locust bean gum. The properties of the free and immobilized enzyme were then determined. The optimum pH for both the soluble and immobilized enzyme was 4.8. The optimum temperature for the soluble enzymes was $50^{\circ}C$, whereas that for the immobilized enzyme was $55^{\circ}C$. The immobilized enzyme was used in batch, repeated batch, and continuous modes to degrade the raffinose-family sugars present in soymilk. Two hours of incubation with the free and immobilized ${\alpha}$-galactosidases resulted in an 80% and 68% reduction in the raffinose oligo saccharides in the soymilk, respectively. In the repeated batch, a 73% reduction was obtained in the fourth cycle. A fluidized bed reactor was also designed to treat soymilk continuously and the performance of the immobilized ${\alpha}$-galactosidase tested at different flow rates, resulting in a 90% reduction of raffinose-family oligosaccharides in the soymilk at a flow rate 40 ml/h. Therefore, the present study demonstrated that immobilized ${\alpha}$-galactosidase in a continuous mode is efficient for reducing the oligosaccharides present in soymilk, which may be of considerable interest for industrial application.

Effects of Additives on the Physical Properties of Antarctic Krill Euphausia superba Surimi (남극 크릴(Euphausia superba) 연육의 물성에 대한 첨가제의 영향)

  • Chae, Yeon-Joo;Choi, Eun-Hye;Lee, Yang-Bong;Chun, Byung-Soo;Kim, Seon-Bong
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.4
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    • pp.347-355
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    • 2014
  • This study examined the effects of additives on the physical properties of surimi made from Antarctic krill Euphausia superba. Krill surimi was prepared from krill meat with an added cryoprotectant (sugar 6%, polyphosphate 0.2%). Krill surimi without additives does not form a gel. In order to enhance the gelling of krill surimi, additives such as soy protein isolate (SPI), guar gum, carrageenan, and wheat starch were examined. Of these, SPI had the highest gel-forming activity, while guar gum, carrageenan, and wheat starch had decreasing gel-forming activity and negative effects on other physical properties as their concentrations were increased. In addition, SPI enhanced the gel strength and physical properties of krill surimi. The fluoride and astaxanthin contents of krill surimi with added SPI were 55.0 mg/kg and 0.8 mg/kg, respectively.

Sulfuretin, an Antinociceptive and Antiinflammatory Flavonoid from Rhus verniciflua

  • Choi, Jong-Won;Yoon, Byung-Jae;Han, Yong-Nam;Lee, Sang-Kook;Lee, Kyung-Tae;Park, Hee-Juhn
    • Natural Product Sciences
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    • v.9 no.2
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    • pp.97-101
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    • 2003
  • This study was undertaken to evaluate the antinociceptive and antiinflammatory effects of the heartwood extract of Rhus verniciflua (Anacardiaceae) and the two major components, sulfuretin and fustin. The MeOH extract, its EtOAc-soluble portion and sulfuretin showed significant antinociceptive activity in writhing and hot plate test assays and antiinflammaory effects in carrageenan-induced hind paw edema in rats. In particular, treatment of sulfuretin with 10 mg/kg dose (i.p.) reduced writhing frequency by 48.0% (p<0.01) compared to that of a control group. Further, the treatment of sulfuretin (5, 10 mg/kg, i.p.) for 7 days prevented the carrageenan-induced hind paw edema significantly (p<0.01). The antiinflammatory effect of sulfuretin was also confirmed by microscopic observation of mast cell numbers in muscle. In addition, sulfuretin suppressed the cyclooxygenase- 2 (COX-2) activity $(IC_{50}\;=\;28.7\;{\mu}M)$ in lipopolysaccharide-activated macrophage cells. This result indicates that the inhibitory effect of sulfuretin on COX-2 may be one of the antinociceptive/antiinflammatory mechanism.

Effects of Glucomannan, Carrageenan, Carboxymethyl cellulose, and Transglutaminase-B on the Quality Properties of Pork Patties Containing Pork Skin Connective Tissue (Glucomannan, Carrageenan, Carboxymethyl cellulose 및 Transglutaminase-B 첨가가 돈육껍질결체조직 함유 돈육 패티의 품질 특성에 미치는 영향)

  • Jin, Sang-Keun;Yang, Han-Sul
    • Journal of Animal Science and Technology
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    • v.54 no.4
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    • pp.307-313
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    • 2012
  • This study was conducted to investigate the effects of glucomannan (GMN), carrageenan (CAR), carboxymethyl cellulose (CMC), and transglutaminase-B (TGB) on the quality and storage properties of pork patties manufactured with pork skin connective tissue during 21 d of storage at $4^{\circ}C$. Results showed that CIE color values like lightness, redness and yellowness did not differ significantly among the pork patties. Sensory attributes also did not differ between the treatments (P>0.05). However, cooking loss was significantly lower in the group with added GMN, CAR, CMC, and TGB compared to the control at 21 d of storage. The shear force value of GMN and TGB were lower than the control at 21 d of storage (P<0.05). The pork patties added with GMN and TGB had lower thiobarbituric acid reactive substances (TBARS) values than the control at 1 or 21 d of storage (P<0.05). Volatile basic nitrogen (VBN) values of all treatment samples was lower than the control at 21 d of storage (P<0.05). Therefore, result of cooking loss suggested that the decrease in shear force in GMN and TGB were due to higher moisture retention. Also, the pork skin connective tissue with added GMN and TGB decreased lipid oxidation of pork patties.

Effects of the Geijibokryunghwan on Carrageenan-induced Inflammation and COX-2 in Hepatoma Cells

  • Joo, Shin-Tak;Ban, Chang-Gyu;Park, Soon-Gi;Park, Won-Hwan
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.20 no.4
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    • pp.1027-1031
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    • 2006
  • In oriental medicine, Geijibokryunghwan(GBH) was used to improvement various symptoms created by the thrombosis. We investigated the effects of an oriental medicinal prescriptions, Geijibokryunghwan (GBH) consisting of herbs of Cinnamomi Ramufus (Geiji; 桂枝), Poria cocos (Bokrung; 茯?), Moutan Cortex Radicis(Modanpi; 牧丹皮), Paeoniae Radix (Jakyak; 芍藥) and Persicae Semen (Doin; 桃仁) on tumor growth-inhibitory activity and cancer chempreventive activity in assays representing three maior stages of carcinogenesis. Cancer chempreventive agents include nonsteroidal anti-inflammatory drugs (NSAIDS) such as indomethacin, aspirin, piroxicam, and sulindac, all of which inhibit cyclooxygenase (COX). Effects of the GBH extracts on carrageenan-induced edema Inflammation using female (C57BL/6XC3H) Fl (B6C3Fl ) mice and tumorigenesis were examined. Finally, cyclooxygenase metabolites were determined after extracts treatment. These data suggest that GBH extracts merits investigation as a potential cancer chempreventive agent in humans.

Study on the Effect of Phenol Compound-Cold Therapy plus Exercise Therapy on the Muscle Pain Induced by Carrageenan (페놀 화합물 냉치료와 운동요법의 병행적용이 Carrageenan에 의하여 유발된 근육 통증에 미치는 영향에 관한 연구)

  • Kim, Myoung-Seoup
    • PNF and Movement
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    • v.7 no.3
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    • pp.29-38
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    • 2009
  • Purpose : The aim of this study is to examine the effect of the phenol compound-cold therapy plus exercise therapy on the carrageenan(CAR)-induced muscle pain. Method : Mice were injected 0.1ml of 2% CAR into the gastrocmemius(GAS) muscle for the induction of muscle pain. After 4 hours from the injection of CAR, the cold therapy with 1% syringic acid was done to GAS muscle. After 2 hours from cold therapy, the exercise therapy such as muscle stretching, climing- and declining-movements was performed three times interval of 10 minutes in each experimental group. After 4, 10 and 24 hours from CAR-induced muscle pain, the measurements of muscle diameter, paw withdrawal latency(PWL) and, tail flick latency(TFL) were carried out. Results : In this study, the thickness of GAS muscle in CAR-induced muscle pain significantly increased compared with control. While, the thickness of GAS muscle adopted cold syringic acid-therapy with exercise-therapy group was significantly decreased than that of CAR-induced muscle pain. In the measurements of PWL and TFL, cold syringic acid-therapy with exercise-therapy group was remarkably increased than CAR-induced muscle pain group in PWL and TFL. All measurements were showed significantly different between the treated-group and the treated-time. Conclusions : From these results, it is suggested that the cold syringic acid-therapy with exercise-therapy such as muscle stretching, climing- and declining-movement was effective in the prevention of CAR-induced muscle pain by the decrease of muscle thickness and the increase of PWL and TFL.

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