Physical, chemical and rheological properties of pitomba (Talisia esculenta) seed starch and its application as a thickener and stabilizer in ketchup

The present study aimed to characterize the physical, chemical and rheological properties of starch extracted from pitomba seeds and verify the influence of its addition on the syneresis and viscosity characteristics of ketchup during storage, compared to maize starch. Extraction was performed by grinding the seeds in sodium metabisulfite solution (0.2%) followed by drying at 50 ºC. ketchups were formulated with the addition of 0.5 and 1% pitomba starch, 0.5 and 1% maize starch and a control formulation. Starch showed low percentages of protein, ashes and lipid, starch purity of 77.78%, amylose of 19.25%, apparent density of 0.46 g/cm3 and compact density of 0.66 g/cm3. The starch pastes showed pseudoplastic behavior and imparted significant viscosity, usable in increasing the consistency of fluid foods. Ketchups formulated with addition of pitomba starch showed reduction of syneresis during storage, and the 1% starch concentration can slow down the syneresis process in ketchup at temperatures of 7 and 25 °C, similar to the stabilizing capacity of maize starch. Ketchup viscosity increased with the addition of pitomba and maize starches, but the highest apparent viscosities were obtained in ketchup with addition of pitomba starch during storage

Download Full-text

Study of the physical, chemical and rheological properties of oil mixtures transported through the Uzen - Atyrau - Samara pipeline

SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION ◽

10.28999/2541-9595-2021-11-4-420-427 ◽

2021 ◽

pp. 420-427

Author(s):

Берик Картанбаевич Саяхов ◽

Александр Геннадьевич Дидух ◽

Гульнара Амангельдиевна Габсаттарова ◽

Марат Давлетович Насибулин ◽

Жасулан Канатович Наурузбеков

Keyword(s):

Rheological Properties ◽

Pour Point ◽

Heating Temperature ◽

High Viscosity ◽

Rheological Parameters ◽

Polarization Microscopy ◽

Oil Pipeline ◽

Physical Chemical ◽

Wide Range ◽

Oil Mixtures

На начальных участках магистрального нефтепровода Узень - Атырау - Самара формируются партии низкозастывающих бузачинских и высокозастывающих мангышлакских нефтей. По маршруту транспортировки осуществляются дополнительные подкачки нефтей с различными физико-химическими и реологическими характеристиками, что может оказывать существенное влияние на свойства перекачиваемых нефтесмесей. Цель настоящей работы - исследование физико-химических и реологических свойств бузачинской и мангышлакской нефтесмесей на маршруте поставки Узень - Атырау, а также диапазона и причин изменений характеристик бузачинской нефти (основной в компонентном составе нефтесмесей, перекачиваемых по нефтепроводу Узень - Атырау - Самара). По результатам исследований установлено, что свойства мангышлакской нефтесмеси изменяются в незначительных пределах. Для бузачинской нефтесмеси свойственна нестабильность реологических параметров, которые могут изменяться в широком диапазоне в результате путевой подкачки на различных участках нефтепровода. Колебания реологических параметров наиболее показательных проб партий бузачинской нефтесмеси рекомендуется учитывать для решения задач повышения текучести высоковязких нефтей и оптимизации технологических режимов работы трубопроводов, по которым осуществляется перекачка таких нефтей. Методами газохроматографического анализа молекулярно-массового распределения тугоплавких парафинов и поляризационной микроскопии определена температура нагрева бузачинской и мангышлакской нефтесмесей, оптимальная для ввода депрессорной присадки. At the initial sections of the Uzen - Atyrau - Samara main oil pipeline, batches of low pour point Buzachinsky and high pour point Mangyshlak oils are formed. Additional pumping of oils with different physical, chemical and rheological characteristics is carried out along the transportation route, which can have a significant effect on the properties of the pumped oil mixtures. The purpose of this study is to examine the physical, chemical and rheological properties of Buzachi and Mangyshlak oil mixtures on the Uzen - Atyrau supply route, as well as the range and causes of changes in the characteristics of Buzachinsky oil (the main oil mixture in the blend composition pumped through the Uzen - Atyrau - Samara pipeline). According to the research results, it was found that the properties of the Mangyshlak oil mixture vary within insignificant limits. The Buzachinsky oil mixture is characterized by instability of rheological parameters, which can vary in a wide range as a result of route pumping at different pipeline sections. Fluctuations of the rheological parameters of the most indicative samples of batches of the Buzachinsky oil mixture are recommended to be taken into account in order to increase the fluidity of high-viscosity oils and optimize the process modes of operation of pipelines through which such oils are pumped. Using the methods of gas chromatographic analysis of the molecular weight distribution of high-melting-point paraffins, as well as polarization microscopy, the optimal heating temperature for the introduction of a pour point depressant into the Buzachinsky and Mangyshlak oil mixtures has been determined.

Download Full-text

Rheological Properties of Fluid Foods

Transport Properties of Foods ◽

10.1201/9781482271010-11 ◽

2001 ◽

pp. 81-122

Keyword(s):

Rheological Properties ◽

Fluid Foods

Download Full-text

Rheological properties of teak wood flour reinforced HDPE and maize starch composites

Journal of Applied Polymer Science ◽

10.1002/app.49874 ◽

2020 ◽

Vol 138 (8) ◽

pp. 49874

Author(s):

Kishor Biswas ◽

Vinay Khandelwal ◽

Sourindra Maiti

Keyword(s):

Rheological Properties ◽

Wood Flour ◽

Maize Starch ◽

Teak Wood

Download Full-text

IMPROVEMENT OF PHYSICAL-CHEMICAL AND RHEOLOGICAL PROPERTIES OF GHARDAÏA LOESS (SOUTHERN ALGERIA) USING BENTONITE CLAY AND LIME

Clays and Clay Minerals ◽

10.1007/s42860-020-00092-8 ◽

2020 ◽

Vol 68 (5) ◽

pp. 499-512

Author(s):

Asmaa Rahmani ◽

Abdelkrim Hazzab ◽

Hadj Aimer ◽

Abdellah Ghenaim ◽

Abdelali Terfous

Keyword(s):

Rheological Properties ◽

Bentonite Clay ◽

Physical Chemical

Download Full-text

Characterization, Modification and Rheology of Green Clay

Materials Science Forum ◽

10.4028/www.scientific.net/msf.820.60 ◽

2015 ◽

Vol 820 ◽

pp. 60-64

Author(s):

Leila Verônica da Rocha-Gomes ◽

Antônio José Santana ◽

Camila Martini Matos ◽

Valquíria de Fátima Justo ◽

Maria Das Graças Silva-Valenzuela ◽

...

Keyword(s):

Water Absorption ◽

Rheological Properties ◽

Apparent Density ◽

Industrial Applications ◽

Clay Sample ◽

Oil Drilling ◽

Smectite Clays ◽

Swelling Capacity ◽

Before And After ◽

Green Clay

Smectite clays or bentonites are used in several industrial applications. The aim of this study was to describe the characterization and organophilization of a green clay sample coming from the State of Paraíba, Brazil. The clay was characterized by XRD, XRF, CEC, SEM, stereoscopic microscopy, Fann viscosity (before and after the organophilization process), swelling capacity in water and some organic solvents. Prismatic specimens were conformed by pressing, for which were conformed the mechanical sthegth after drying at 110°C and after burning at 950°C. The burned specimens were analyzed to evaluate dimensional variations, water absorption, apparent porosity and apparent density. XRD showed that the sample was constituted mainly for montmorillonite claymineral. Analysis of rheological properties of the modified clay indicates its potential to meet the specifications of the standard N-2604 of Petrobras, concerning clays used to oil drilling.

Download Full-text