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Search Results: 1 - 10 of 4385 matches for " seed gum "
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Rheological properties of low fat yogurt containing cress seed gum  [PDF]
Armita Behnia, Hojjat Karazhiyan, Razieh Niazmand, Abdol Reza Mohammadi Nafchi
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.49B005
Abstract:

Yogurt—a milk based mix fermented by lactic acid bacteria is a valuable health food for both young and old. Milk is the main ingredient of yogurt. However, most yogurts contain additional solids such as milk solids nonfat to boost the nonfat milk solids. Stabilizers such as natural gums are added to improve and maintain gel firmness and consistency, while also for many people to improve appearance and mouth feel. Hydrocolloidsspecifically stabilize gel structure, increaseviscosity and either from networks with milk constituents and establish a separate gel structure. In current research, a natural local plant Iranian hydrocolloid, cress seed gum, is added to yogurt formulation and its rheological propertiesare evaluated using a rotational viscometer. Different famous rheological models have beenused to fit shear stress-shear rate data’s. The results demonstrated that cress seed gum has a good potential to be used as a stabilizer in yogurt formula.

Effect of Different Purification Techniques on the Characteristics of Heteropolysaccharide-Protein Biopolymer from Durian (Durio zibethinus) Seed
Bahareh Tabatabaee Amid,Hamed Mirhosseini
Molecules , 2012, DOI: 10.3390/molecules170910875
Abstract: Natural biopolymers from plant sources contain many impurities (e.g., fat, protein, fiber, natural pigment and endogenous enzymes), therefore, an efficient purification process is recommended to minimize these impurities and consequently improve the functional properties of the biopolymer. The main objective of the present study was to investigate the effect of different purification techniques on the yield, protein content, solubility, water- and oil-holding capacity of a heteropolysaccharide-protein biopolymer obtained from durian seed. Four different purification methods using different chemicals and solvents (i.e., A (isopropanol and ethanol), B (isopropanol and acetone), C (saturated barium hydroxide), and D (Fehling solution)] to liberate the purified biopolymer from its crude form were compared. In most cases, the purification process significantly (p < 0.05) improved the physicochemical properties of heteropolysaccharide-protein biopolymer from durian fruit seed. The present work showed that the precipitation using isopropanol and acetone (Method B) resulted in the highest purification yield among all the tested purification techniques. The precipitation using saturated barium hydroxide (Method C) led to induce the highest solubility and relatively high capacity of water absorption. The current study reveals that the precipitation using Fehling solution (Method D) most efficiently eliminates the protein fraction, thus providing more pure biopolymer suitable for biological applications.
Physicochemical characteristics of Hymeneae courbaril gum
Molina,Edgar; El Kader,Dina Abed; Montero,Keyla; Parra,Yonathan; á?ez,Omaira; León de Pinto,Gladys; Bravo,Adriana;
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2008,
Abstract: hymeneae courbaril, wild plant located in venezuela, produces a clear gum at seed level, which is very soluble in water. it was determined analytical characteristics of this gum., general analytical data, proximate analysis, dietary fiber content, mineral composition, and amino acid composition. classic analytical methods for characterization of the gums; hplc and atomic absorption spectroscopy were used. the gum contains galactose, glucose, arabinose and xylose. it also contains a high proportion of dietary fiber content (73.75%) and calcium, magnesium, sodium and potassium. in addition, the gum has relatively high protein content (6.62%). tannins, alkaloids, cyanides and toxic metals were absent in the gum. the physicochemical characteristics of the gum from hymeneae courbaril may suggest its possible use as additive in food industry; therefore, it would be interesting to study the food functionality of that gum.
Datos analíticos de la goma de la semilla de Leucaena leucocephala
Abed El Kader,D; Molina,E. A; Montero,K. C; Gutierrez,O; Troncone,G; León de Pinto,G;
Revista de la Facultad de Agronomía , 2008,
Abstract: seeds from leucaena leucocephala (lam.) contain gum very soluble in water. ash, dry matter, dietetic fiber, crude fiber, protein, tannin, sugar contents and amino acids composition were determined. classic analytical methods like high performance liquid chromatography (hplc), proximate analysis and atomic absorption spectroscopy were used for gum characterization. gum contains mannose and galactose. presence of essential and no essential amino acids -with the exception of cysteine- was demonstrated. the mineral composition of ash showed calcium, magnesium, sodium and potassium predominantly. the dietetic fiber content is lower than those reported for some commercial gums. the analytical data suggest that l. leucocephala gum has a potential application in textile, chemistry and painting industries.
Use of Prosopis laevigata Seed Gum and Opuntia ficus-indica Mucilage for the Treatment of Municipal Wastewaters by Coagulation-Flocculation  [PDF]
Luis G. Torres, Sandra L. Carpinteyro-Urban
Natural Resources (NR) , 2012, DOI: 10.4236/nr.2012.32006
Abstract: Prosopis laevigata and Opuntia ficus-indica grow in arid and semiarid regions of Mexico and other countries. Both produce biopolymers with interesting characteristics from the rheological point of view as well as because of their coagulating-flocculating capabilities. Prosopis produce galactomannans inside the endosperm, very similar to those found in guar, locust bean, and tara gums. Opuntia sp. produces mucilage that contains polygalacturonic acid and five neutral sugars. Prosopis seed gum has not been proposed to be used as coagulant-flocculant before. In the case of Opuntia mucilage, some authors have suggested its use in the treatment of waters, using either the mucilage or the whole cladode powder. The use of these products in the treatment of municipal or even industrial wastewaters could give rise to diverse benefits. From the environmental point of view, treated waters with neither Fe nor Al, nor synthetic polymers would be obtained (with less toxicity risk). Besides, the produced sludges would be smaller in amount, with better biodegradability, and lower metals content. From the economical point of view, the use of these biopolymers would give an added value to the Opuntia and Prosopis culture in Mexico, helping small communities to enhance their incomes by producing environmental-friendly products. This work shows that both Prosopis galactomannan and Opuntia mucilage can be used to treat municipal wastewaters with an initial organic charge of about 827 mg/L as COD by the coagulation-flocculation process, with COD removals for the mesquite seed gum of up to 90% (pH 10, dose of 75 mg/L) and of 60% (pH 7, doses of 50 and 150 mg/L). In the case of mucilage, 65% of the initial COD was removed at pH 10 (dose of 50 mg/L). These figures are very promising for the treatment of wastewaters, with environmental-friendly products.
Rheometry and scanning electron microscopy study of casein curds added with mesquite seed gum and soy proteins
Hernández-Tinoco,A.; Ramos-Ramírez,E. G.; Falcony-Guajardo,C.; Salazar-Montoya,J. A.;
Latin American applied research , 2004,
Abstract: the rheological and micro-structural characteristics of curds added with mesquite seed gum (mesg) and soy protein (sp) were studied. two types of curds were prepared either with 100% raw commercial milk or with a 50% low-fat milk and the effect of the addition of 0.15% (w/w) and 0.45% (w/w) of mesg and/or 0.3% (w/w) and 0.6% (w/w) soy protein content was analyzed. the addition of mesg and sp results in moisture of up to 64.0% compared to 43.2% in the control sample. the rheometric functions g' (storage modulus) and g'' (loss modulus), measured in the frequency sweep from 6.28 to 62.8 rad/s tend to decrease for curds prepared with 100% raw milk and the addition of mesg and/or sp. in the case of low-fat milk curds the opposite behavior was observed. the micro-morphology of the samples added with mesg-sp present a cavernous appearance that was not present in the control curd.
Rheometry and scanning electron microscopy study of casein curds added with mesquite seed gum and soy proteins
A. Hernández-Tinoco,E. G. Ramos-Ramírez,C. Falcony-Guajardo,J. A. Salazar-Montoya
Latin American applied research , 2004,
Abstract: The rheological and micro-structural characteristics of curds added with mesquite seed gum (MESG) and soy protein (SP) were studied. Two types of curds were prepared either with 100% raw commercial milk or with a 50% low-fat milk and the effect of the addition of 0.15% (w/w) and 0.45% (w/w) of MESG and/or 0.3% (w/w) and 0.6% (w/w) soy protein content was analyzed. The addition of MESG and SP results in moisture of up to 64.0% compared to 43.2% in the control sample. The rheometric functions G' (storage modulus) and G'' (loss modulus), measured in the frequency sweep from 6.28 to 62.8 rad/s tend to decrease for curds prepared with 100% raw milk and the addition of MESG and/or SP. In the case of low-fat milk curds the opposite behavior was observed. The micro-morphology of the samples added with MESG-SP present a cavernous appearance that was not present in the control curd.
Influence of Chemical Extraction Conditions on the Physicochemical and Functional Properties of Polysaccharide Gum from Durian (Durio zibethinus) Seed
Hamed Mirhosseini,Bahareh Tabatabaee Amid
Molecules , 2012, DOI: 10.3390/molecules17066465
Abstract: Durian seed is an agricultural biomass waste of durian fruit. It can be a natural plant source of non-starch polysaccharide gum with potential functional properties. The main goal of the present study was to investigate the effect of chemical extraction variables (i.e., the decolouring time, soaking temperature and soaking time) on the physicochemical properties of durian seed gum. The physicochemical and functional properties of chemically-extracted durian seed gum were assessed by determining the particle size and distribution, solubility and the water- and oil-holding capacity (WHC and OHC). The present work revealed that the soaking time should be considered as the most critical extraction variable affecting the physicochemical properties of crude durian seed gum.
Datos analíticos de la goma de la semilla de Leucaena leucocephala Analytical data of seed gum from Leucaena leucocephala
D Abed El Kader,E. A Molina,K. C Montero,O Gutierrez
Revista de la Facultad de Agronomía , 2008,
Abstract: Las semillas de Leucaena leucocephala (Lam.), contiene goma muy soluble en agua. Se determinaron los contenidos de ceniza, materia seca, fibra dietética, fibra cruda, proteína, taninos, la composición de azúcares y aminoácidos. Se usaron métodos analíticos clásicos para la caracterización de la goma, cromatografía liquida de alta resolución (HPLC), análisis proximal y espectroscopia de absorción atómica. La goma contiene manosa y galactosa. Se demostró la presencia de aminoácidos esenciales y no esenciales con excepción de la cisteina. La composición mineral de la ceniza de la goma mostró predominantemente la presencia de calcio, magnesio, sodio y potasio. El contenido de fibra dietética es menor que aquéllos reportados para algunas gomas comerciales. Los datos analíticos sugieren que la goma de semilla de L. leucocephala tiene potencial aplicación en las industrias de textil, química y pintura. Seeds from Leucaena leucocephala (Lam.) contain gum very soluble in water. Ash, dry matter, dietetic fiber, crude fiber, protein, tannin, sugar contents and amino acids composition were determined. Classic analytical methods like high performance liquid chromatography (HPLC), proximate analysis and atomic absorption spectroscopy were used for gum characterization. Gum contains mannose and galactose. Presence of essential and no essential amino acids -with the exception of cysteine- was demonstrated. The mineral composition of ash showed calcium, magnesium, sodium and potassium predominantly. The dietetic fiber content is lower than those reported for some commercial gums. The analytical data suggest that L. leucocephala gum has a potential application in textile, chemistry and painting industries.
Características fisicoquímicas de la goma de Hymeneae courbaril Physicochemical characteristics of Hymeneae courbaril gum
Edgar Molina,Dina Abed El Kader,Keyla Montero,Yonathan Parra
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2008,
Abstract: La especie Hymeneae courbaril, planta silvestre localizada en Venezuela, produce una goma clara contenida en la semilla, la cual es muy soluble en agua. Se determinaron las siguientes características analíticas de la goma; los datos analíticos generales, el análisis proximal, el contenido de fibra dietética, la composición mineral y la composición de aminoácidos. Se utilizaron métodos analíticos clásicos para la caracterización de la goma; HPLC y espectroscopia de absorción atómica. La goma contiene galactosa, glucosa, arabinosa y xilosa. Esta también contiene una alta proporción de fibra dietética (73,75%) y calcio, magnesio, sodio y potasio. La goma contiene además un contenido relativamente alto de proteína (6,62%). Los taninos, alcaloides, cianuros y metales tóxicos están ausentes en la goma. Las características fisicoquímicas de la goma de Hymeneae courbaril sugiere su posible uso como aditivo en la industria alimentaria, sin embargo, pudiera ser interesante el estudio de la funcionalidad de esta goma. Hymeneae courbaril, wild plant located in Venezuela, produces a clear gum at seed level, which is very soluble in water. It was determined analytical characteristics of this gum., general analytical data, proximate analysis, dietary fiber content, mineral composition, and amino acid composition. Classic analytical methods for characterization of the gums; HPLC and atomic absorption spectroscopy were used. The gum contains galactose, glucose, arabinose and xylose. It also contains a high proportion of dietary fiber content (73.75%) and calcium, magnesium, sodium and potassium. In addition, the gum has relatively high protein content (6.62%). Tannins, alkaloids, cyanides and toxic metals were absent in the gum. The physicochemical characteristics of the gum from Hymeneae courbaril may suggest its possible use as additive in food industry; therefore, it would be interesting to study the food functionality of that gum.
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