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G H Meletharayil, H A Patel, L E Metzger, C Marella, T Huppertz
Innovative clean label processes employed in the manufacture of acid gels are targeted to modify the structure of proteins that contribute to rheological properties. In the present study, CO2-treated milk protein concentrate powder with 80% protein in dry matter (TMPC80) was mixed with nonfat dry milk (NDM) in different ratios for the manufacture of acid gels. Dispersions of NDM and TMPC80 that provided 100, 90, 70, and 40% of protein from NDM were reconstituted to 4.0% (wt/wt) protein and 12.0% (wt/wt) total solids...
January 10, 2018: Journal of Dairy Science
Sahar Jazaeri, Abdorreza Mohammadi, Amir Mehrabi Panah Kermani, Gopinadhan Paliyath, Yukio Kakuda
Tomato juice and paste are special type of dispersions, composed of suspended particles (pulp) dispersed in a colloidal liquid medium (serum). The bright red appearance of soluble solid separated by high speed centrifugation denoted the presence of lycopene in this fraction. Since lycopene is a hydrophobic compound it is not expected to appear in the water soluble fraction. HPLC analysis indicated presence of substantial amount of lycopene in soluble fraction which was confirmed by the appearance of lycopene crystals when observed under Transmission Electron Microscope (TEM)...
April 15, 2018: Food Chemistry
Qian Li, Rui Liu, Tao Wu, Min Zhang
The present study assesses the aggregation behavior of wheat bran arabinoxylan-rich soluble dietary fiber (SDF) fractions with diverse molecular weight and substitution in order to provide useful information to prevent the formation of a block network. In the present work, dynamic and static light scattering, diffusing wave spectroscopy, small amplitude dynamic rheology, atomic force microscopy, and the water-holding and swelling capacities were evaluated to assess the SDF aggregation behavior induced by intrinsic and extrinsic factors...
December 2017: Food Research International
Fatemeh Reesi, Mohsen Minaiyan, Azade Taheri
Nanofiber-based wound dressings have attracted much attention in wound care owing to their unique properties such as high aspect ratio and three-dimensional structure. Arginine is a precursor of nitric oxide that plays an important role in the wound-healing process. Therefore, in this study, we have developed a gel which contains lignin nanofibers (Lig-NFs) that were surface modified by arginine molecules via electrostatic interaction (Arg-Lig-NF gel). The effect of pH on the amount of arginine attached on Lig-NF surface was evaluated at three different pH values-5, 6, and 7...
November 20, 2017: Drug Delivery and Translational Research
Su-Jung Park, Richard Leesungbok, Jae-Won Song, Se Hun Chang, Suk-Won Lee, Su-Jin Ahn
PURPOSE: The aim of this study was to investigate dental arch dimensions and to classify arch shape in Korean young adults. MATERIALS AND METHODS: The sample included 50 Koreans with age ranging from 24 to 32 years. Maxillary and mandibular casts were fabricated using irreversible hydrocolloid and type III dental stones. Incisor-canine distance, incisor-1(st) molar distance, incisor-2(nd) molar distance, intercanine distance, inter-1(st) molar distance, and inter-2(nd) molar distance in both the maxillary and mandibular arch were measured using a three-dimensional measuring device...
October 2017: Journal of Advanced Prosthodontics
Ahmed Ghannam, Hossam Murad, Marie Jazzara, Adnan Odeh, Abdul Wahab Allaf
Hydrocolloids from seaweeds (phycocolloids) have interesting functional properties like antiproliferative activity. Marine algae consumptions are linked to law cancer incidences in countries that traditionally consume marine products. In this study, we have investigated water-soluble sulfated polysaccharides isolated from the red seaweed Laurencia papillosa and determined their chemical characteristics and biological activities on the human breast cancer cell line MCF-7. Total polysaccharides were extracted and fractionated from L...
November 4, 2017: International Journal of Biological Macromolecules
R Sreeraj, Vinod Krishnan, Manju V, Krishnakumar Thankappan
PURPOSE: This study compared masticatory and swallowing functional outcomes in maxillectomy patients who underwent surgical and prosthetic rehabilitation or prosthetic rehabilitation only following surgical resection. MATERIALS AND METHODS: This comparative cross-sectional study involved 20 maxillectomy patients and compared their masticatory and swallowing functions following combined surgical and prosthodontic management vs an exclusively prosthodontic approach...
November 2017: International Journal of Prosthodontics
Sara A Alfadda, Mohammad D Al Amri, Amal Al-Ohali, Arwa Al-Hakami, Noura Al-Madhi
PURPOSE: To investigate the following three null hypotheses in patients rehabilitated with a mandibular overdenture supported by two unsplinted implants: (1) patient satisfaction is not related to the clinical quality of the dentures; (2) inter-implant distance (IID) has no effect on the clinical quality of the dentures; and (3) IID does not influence patient satisfaction. MATERIALS AND METHODS: Forty edentulous patients who were rehabilitated with a two-implant-supported mandibular overdenture participated in the study...
November 2017: International Journal of Prosthodontics
A Noorlaila, H Nor Hasanah, A Yusoff, S H Sarijo, R Asmeda
The effects of xanthan gum (XG) and hydroxypropyl methylcellulose (HPMC) in sponge cakes were studied. Hydrocolloids enhanced the thickening effect in batter that affected the textural attributes of sponge cakes. During storage, the structural changes in XG-cake resulted in higher hardness compared to HPMC-cake. Similar to XG, HPMC also contributed moistness to cake. The moisture loss of cake containing XG was slower than HPMC-cake. FTIR study showed absorption of OH at region of 3600-2900 cm(-1) that explained the strong interaction of water in cake containing XG compared to other cake formulations...
October 2017: Journal of Food Science and Technology
Min Li, Bin Li, Weijia Zhang
Method development for monitoring economically motivated food adulteration is pivotal for preventing health problems caused by illegal food additives. In this work, low-field nuclear magnetic resonance (LF-NMR) spectroscopy and magnetic resonance imaging (MRI) was applied for the detection and mapping of adulterated prawns injected with different hydrocolloids including gelatin, carrageenan, agar, amorophophallus konjac and xanthan gum. The characteristic T2 fitting curves were obtained which can be used to tell apart adulterated prawns from normal ones...
March 1, 2018: Food Chemistry
Ernest Zacharevskij, Gytis Baranauskas, Karolis Varkalys, Rytis Rimdeika, Darius Kubilius
This paper describes a randomized, controlled, parallel-group, single-center clinical trial designed to compare non surgical treatment methods of deep partial thickness skin burns of the hand. All patients were scanned with the Laser Doppler Imaging device to determine the depth of the burn wound. Viable keratinocytes sites were determined according to the established Perfusion Units (PU) measurement system. The trial enrolled 87 patients with hand burn wounds in the section of 260-600PU. Hand burn patients were divided into the following four groups: treated with hydrocolloid dressings; treated with mechanical debridement of monofilament polyester fibers pad and then applying silver sulfadiazine; treated with gauze dressings containing enzymatic collagenase preparation...
October 9, 2017: Burns: Journal of the International Society for Burn Injuries
Rachel M Walker, Brigid M Gillespie, Lukman Thalib, Niall S Higgins, Jennifer A Whitty
BACKGROUND: Pressure ulcers, also known as pressure injuries and bed sores, are localised areas of injury to the skin or underlying tissues, or both. Dressings made from a variety of materials, including foam, are used to treat pressure ulcers. An evidence-based overview of dressings for pressure ulcers is needed to enable informed decision-making on dressing use. This review is part of a suite of Cochrane Reviews investigating the use of dressings in the treatment of pressure ulcers...
October 12, 2017: Cochrane Database of Systematic Reviews
Cheol-Woo Park, Jin-Ho Kim, Yu-Kyeong Seo, Sae-Rom Lee, Ju-Hee Kang, Song-Hee Oh, Gyu-Tae Kim, Yong-Suk Choi, Eui-Hwan Hwang
PURPOSE: This study was performed to investigate the influence of object shape and distance from the center of the image on the volumetric accuracy of cone-beam computed tomography (CBCT) scans, according to different parameters of tube voltage and current. MATERIALS AND METHODS: Four geometric objects (cylinder, cube, pyramid, and hexagon) with predefined dimensions were fabricated. The objects consisted of Teflon-perfluoroalkoxy embedded in a hydrocolloid matrix (Dupli-Coe-Loid TM; GC America Inc...
September 2017: Imaging Science in Dentistry
Shruti Dev, Aswini K Kar, Mirna Garhnayak, Lokanath Garhnayak, Angurbala Dhal
INTRODUCTION: Alginate is a versatile, irreversible hydrocolloid impression material, which is cost-effective and forms an essential component in dental practice. For elevating the hardness of the cast models, hardeners are combined with stone. Hence, we planned the present study to evaluate the impact of altering the time of contact between alginate and stone after various interim periods. MATERIALS AND METHODS: The present study included the assessment of impact of time of contact between alginate and stone by the construction of 90 casts using a cylinder model...
October 1, 2017: Journal of Contemporary Dental Practice
Veena B Benakatti, Abhijit P Patil, Jayashee Sajjanar, Supriya S Shetye, Ulhas N Amasi, Raghunath Patil
AIM: This study evaluated the antibacterial activity and dimensional stability of irreversible hydrocolloids mixed with different concentrations of chlorhexidine gluconate instead of water. MATERIALS AND METHODS: Experimental specimens (45 specimens) were prepared and allocated into three groups of 15 each. Group I: Impression material mixed with distilled water served as control. Groups II and III were prepared with 0.12 and 0.2% chlorhexidine gluconate solution, respectively...
October 1, 2017: Journal of Contemporary Dental Practice
Peter P Lankhorst, Benjamin Voogt, Remco Tuinier, Blandine Lefol, Patrice Pellerin, Cristiana Virone
Young wines are supersaturated in potassium bitartrate, which induces rather uncontrolled crystallization processes. Delayed crystallization may occur even after bottling of the young wines, which is undesirable because it gives rise to a visual defect in the wine. Colloids such as mannoproteins, metatartaric acid, and carboxymethylcellulose are available on the market and may be added to delay crystallization. It has been a matter of debate whether such hydrocolloids prevent nucleation, growth of crystals, or both...
October 11, 2017: Journal of Agricultural and Food Chemistry
B L Booren, M E Castell-Perez, R K Miller
The objective of this study was to determine whether addition of hydrocolloids, buffer ingredients, salt, and sodium phosphate improve the color, texture, and pH of normal and pale, soft, and exudative (PSE) meat. Specific solutions include potassium bicarbonate (KHCO), ammonium bicarbonate (NHHCO), hydroxypropyl methylcellulose (HPMC), and konjac flour (KF). Three studies were carried out. First, the stability and viscoelastic properties of the different solutions was determined. Second, fresh normal (pH 5...
October 2017: Journal of Texture Studies
Seyed M A Razavi, Fataneh Behrouzian, Ali Alghooneh
The viscoelastic (transient and dynamic) and time-dependent rheological behaviors of XG (xanthan gum), SSG (sage seed gum) and their blends at various ratios (1-3, 1-1, and 3-1 SSG-XG) and temperatures (10, 30, and 50C) were investigated using creep and recovery analyses. The creep compliance was converted to stress relaxation data; then, the structural kinetic model satisfactorily fitted the time-dependent relaxation modulus. Furthermore, dynamic rheology of mixtures was investigated using creep analyses. The most important contribution of the Maxwell spring to deformation (53...
October 2017: Journal of Texture Studies
Mariele Gobo de Oliveira, Luciana Patricia Fernandes Abbade, Hélio Amante Miot, Rosana Rossi Ferreira, Elenice Deffune
Background: Venous ulcers represent 70% of the lower limb ulcers. They are difficult to heal, requiring a correct diagnostic and therapeutic approach. Many products have been developed to healing, such as homologous platelet gel obtained from the platelet concentrate exceeding from blood transfusion. Objective: To evaluate the safety and efficacy of homologous platelet gel in venous ulcers compared with hydrocolloid dressing. Method: A pilot randomized clinical trial in patients with venous ulcers...
July 2017: Anais Brasileiros de Dermatologia
Erik Alpizar-Reyes, Angélica Román-Guerrero, Raquel Gallardo-Rivera, Victor Varela-Guerrero, Julian Cruz-Olivares, César Pérez-Alonso
Tamarind seed mucilage (TSM) was extracted and obtained by spray drying. The power law model well described the rheological behavior of the TSM dispersions with determination coefficients R(2) higher than 0.99. According to power law model, non-Newtonian shear thinning behavior was observed at all concentrations (0.5%, 1%, 1.5% and 2%) and temperatures (25, 30, 40, and 60°C) studied. Increasing temperature decreased the viscosity and increased the flow behavior index, opposite effect was observed when increasing the concentration...
September 16, 2017: International Journal of Biological Macromolecules
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