Tecnología del almidón resistente / Technology of resistant starch

1997 ◽  
Vol 3 (3) ◽  
pp. 149-161 ◽  
Author(s):  
A. Escarpa ◽  
M.C. González
Keyword(s):  
High Pressure ◽  
Resistant Starch ◽  
Point Of View ◽  
Heating And Cooling ◽  
Technological Control ◽  
Different Types ◽  
Retrograded Starch ◽  
Fresh Foods ◽  
Resistant Starches ◽  
Starch Fraction

In recent years the discovery of the starch fraction called resistant starch (RS) has lead to numerous investigations. The nature of this fraction is very heterogeneous, and it comprises different types of resistant starches. From a technological point of view, RS type III or retrograded starch is the most important fraction. This resistant starch is formed after heating and cooling processes which therefore may occur in numerous fresh foods and foodstuffs. This brief review describes the gela tinization and retrogradation, which occur during heating and cooling, involved in the formation of resistant starch. The influence on RS formation of technological processes used in the manu facture of cereals has been studied as well as the influence of certain treatments used in legumes. In addition, the interactions between starch and nutrients such as proteins, lipids and sugars have also been studied. Recently, a high pressure autoclave has been used in a gelatinization system, which allows a better technological control and an increase in RS yields in comparison to conven tional systems.

scholarly journals THERMAL BEHAVIOR OF SINGLE-LEAF WALLS FOR BUILDINGS, MADE WITH LIGHTWEIGHT CERAMIC CLAY BRICKS

2017 ◽  
Vol 18 (2) ◽  
Author(s):  
M.C. JUÁREZ ◽  
M.P. MORALES ◽  
P. MUÑOZ ◽  
M.A. MENDÍVIL
Keyword(s):  
Heat Transfer ◽  
Ghg Emissions ◽  
Masonry Wall ◽  
Point Of View ◽  
Clay Bricks ◽  
Single Leaf ◽  
Heating And Cooling ◽  
Home Heating ◽  
Different Types ◽  
Horizontal Joint

<p>In recent years, several studies about factors influencing the heat transfer in single-leaf walls composed by lightweight ceramic bricks of large format have been made, in order to reduce energy losses. Separate works have highlighted the relevance of some parts composing the wall such as the different types of internal voids in the brick, different types of tongue and groove system and different types of horizontal joint. This paper seeks to integrate these studies in order to give an overview of factors that influence the heat transfer and study the importance of each one of them, from an energy point of view. For this purpose, the influence of every factor in the equivalent thermal transmittance of the external walls of building is compared.</p><p>It is remarkable that a single-leaf wall built with a geometrically optimized brick and thin horizontal joint gives masonry wall many significant advantages, because the amount of heat flux dissipated through the horizontal mortar joint is greatly reduced. Better insulated walls mean that there is less need to use home heating and cooling systems. This means less energy consumption and a proportional decrease in GHG emissions, in line with the objectives for 2020 set in the EEP.</p>

Evaluation of Resistant Starch Quality from Different Types of Banana in Batter Coating Formulation to Reduce Oil Absorption in Fried Food

2019 ◽  
Vol 2 (2) ◽  
pp. 115-120
Author(s):  
Karissha Fritzi Della ◽  
Mutiara Pratiwi ◽  
Purwa Tri Cahyana ◽  
Maria DPT Gunawan-Puteri
Keyword(s):  
Resistant Starch ◽  
Extraction Process ◽  
Fat Content ◽  
Water Retention Capacity ◽  
Oil Absorption ◽  
Retention Capacity ◽  
Fried Food ◽  
Musa Paradisiaca ◽  
Different Types ◽  
Coating Formulation

Fried food is convenient for many people due to its pleasant texture and taste. On the other hand, it comes with the risk of high oil absorption which might lead to certain health problems. Resistant starch (RS) has been known to have a functionality of reducing oil absorption. Three different types of banana: Kepok (Musa paradisiaca formatypica), Raja Bulu (Musa paradisiaca L.) and Ambon (Musa paradisiaca L. var sapientum) were evaluated on its performance when utilized as source of resistant starch especially on their application in reducing oil absorption in fried food. Tempeh was used as the food model. Banana starch (RS2) was isolated through water alkaline extraction process, continued with modification process through three repeated cycles of autoclaving-cooling process to obtain the RS3. RS3 was added into the batter coating formulation at three substitution ratios (10%, 30% and 50%) and then used to coat tempeh before frying. Evaluation of resistant starch in batter and battered productwas conducted on the following parameters: fat content, water retention capacity (WRC), coating pick up and sensory analysis. The result of this study revealed that Raja Bulu showed the most effective result on reducing oil absorption in the food tested. In the three bananas used, the ratio of 50% performed best in coating pick up (highest), WRC (highest) and fat content(lowest) parameters, but not significantly different with the 30% ratio. In terms of sensory acceptance, using Raja Bulu as the selected banana type, 30% of substitution ratio was significantly more preferable by the panelists in crispness, oiliness, and overall acceptance attributes compared to control and other substitution ratios.

Decorative motifs on oil lamps from Grimm's 1973 excavations in Alexandria

2019 ◽  
Author(s):  
Heba Abdel Wahed Sayed
Keyword(s):  
Point Of View ◽  
Symbolic Meaning ◽  
Ancient History ◽  
Different Types ◽  
Decorative Motifs ◽  
Egyptian Culture ◽  
Late Roman

A collection of 30 clay oil lamps from Gunther Grimm's excavations in 1973 in the Western necropolis of Alexandria has been classified by Safaa Samir Abu Al Yazid from Tanta University and found to represent 12 different types ranging in time from the Hellenistic to the late Roman periods in Egypt's ancient history. The present paper looks at this collection from the point of view of the symbolic significance of the decorative motifs used in their decoration. These motifs— figural, floral and geometric—had obvious symbolic meaning to their users and signified more than a simple belief in certain deities. They also reflected Roman Egyptian culture.

scholarly journals High pressure intensification of cassava resistant starch (RS3) yields

2015 ◽  
Vol 181 ◽  
pp. 85-93 ◽  
Author(s):  
Proyphon Lertwanawatana ◽  
Richard A. Frazier ◽  
Keshavan Niranjan
Keyword(s):  
High Pressure ◽  
Resistant Starch

scholarly journals Embodied Energy and Embodied GWP of Windows: A Critical Review

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3788
Author(s):  
Francesco Asdrubali ◽  
Marta Roncone ◽  
Gianluca Grazieschi
Keyword(s):  
Critical Analysis ◽  
Strong Dependence ◽  
Primary Energy ◽  
Point Of View ◽  
Embodied Energy ◽  
Construction Sector ◽  
Industrialized Countries ◽  
Different Types ◽  
Operational Phase ◽  
Operational Impact

The construction sector is one of the most energy-intensive in the industrialized countries. In order to limit climate change emissions throughout the entire life cycle of a building, in addition to reducing energy consumption in the operational phase, attention should also be paid to the embodied energy and CO2 emissions of the building itself. The purpose of this work is to review data on embodied energy and GWP derived from EPDs of different types of windows, to identify the LCA phases, the most impacting materials and processes from an environmental point of view and to perform a critical analysis of the outcomes. The results show a strong dependence on the typology of the frame, with wooden windows having competitive performances: lower average primary energy non-renewable (1123 MJ/FU), higher average primary energy renewable (respectively 817 MJ/FU) and lower global warming potential (54 kgCO2eq/FU). More transparency and standardization in the information conveyed by the program operators is, however, desirable for a better comparability of windows performances. In particular, the inclusion of the operational impact in the EPD is sporadic, but strongly important, since it can be the most impactful phase.

Digestion and physiological properties of resistant starch in the human large bowel

1996 ◽  
Vol 75 (5) ◽  
pp. 733-747 ◽  
Author(s):  
John H Cummings ◽  
Emily R Beatty ◽  
Susan M Kingman ◽  
Sheila A Bingham ◽  
Hans N Englyst
Keyword(s):  
Resistant Starch ◽  
Short Chain Fatty Acid ◽  
Chain Fatty Acid ◽  
Wheat Starch ◽  
Starch Granules ◽  
Human Gut ◽  
Physiological Properties ◽  
Retrograded Starch ◽  
Wet Weight ◽  
Stimulation Of

The digestion of four sources of resistant starch (RS) has been studied in twelve healthy volunteers who ate controlled diets for 15 d periods. RS from potato, banana, wheat and maize (17−30 g/d) was compared with a starch-free diet, a diet containing wheat starch that was fully digested in the small intestine, and with 18·4 g NSP from bran/d. RS increased stool wet weight by 1·6 g/d per g RS fed for potato, 1·7 for banana, 2·5 for wheat and 2·7 for maize, but this was significantly less than bran NSP at 4·9 g/g. RS was extensively digested in twenty-seven of thirtyfour diet periods but five subjects were unable to break down one or two of the RS sources. Faecal N and energy excretion were increased. RS decreased NSP breakdown and RS2(resistant starch granules) tended to prolong transit time. All forms of RS increased faecal total short-chain fatty acid excretion. RS2(from potato and banana) gave greater proportions of acetate in faeces, and RS3(retrograded starch from wheat and maize) more propionate. We have concluded that RS2and RS3are broken down in the human gut, probably in the colon although in 26% of cases this breakdown was impaired. RS exerts mild laxative properties, predominantly through stimulation of biomass excretion but also through some sparing of NSP breakdown.

The combination of different open innovations: a longitudinal case study

2019 ◽  
Vol 13 (2) ◽  
pp. 342-362
Author(s):  
Xiaodong Yuan ◽  
Xiaotao Li
Keyword(s):  
New Product Development ◽  
Open Innovation ◽  
Point Of View ◽  
Longitudinal Case Study ◽  
Key Factors ◽  
Content Type ◽  
Strategic Direction ◽  
Different Types ◽  
Innovation Capacity

Purpose The purpose of this paper is to explore how an organization can combine different types of open innovations and what are the key factors that may influence the combination of different open innovations. Design/methodology/approach The basic methodology of this paper is the longitudinal inductive analysis within the conceptual framework of the open innovation proposed by Dahlander and Gann (2010). In this case study of Xiaomi Tech Inc., the open innovation combination is investigated through examining 25 new products created between August 2010 and December 2016 in terms of four general types: acquiring, sourcing, selling and revealing open innovation. Findings In practice, the combination of different types of open innovations can be realized. A firm may combine different open innovations at three levels: a single product level, a related product cluster level and a company level. In addition, different open innovations can be combined in diverse modes. The purpose of combining different types of open innovations is to overcome the disadvantages of each type and to exploit the advantages of all different types. Many factors may affect a firm’s option of how to combine open innovations. At different development stages, a firm may make and implement corresponding strategic direction based on its innovation capacity and internal resource. For a given strategy, the firm needs to create profits and manage intellectual property in the implementation of open innovations. These factors are interacted each other, rather than isolated. Originality/value The findings of this paper are helpful for better understanding how and why an organization can combine different types of open innovations. From a managerial point of view, an organization may combine different types of open innovations to leverage advantages and avoid disadvantages of each certain type of open innovation. An appropriate combination of different open innovations can effectively improve new product development.

scholarly journals Cell Bioprinting: The 3D-Bioplotter™ Case

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4005 ◽  
Author(s):  
Angelats Lobo ◽  
Ginestra
Keyword(s):  
3D Structure ◽  
Three Dimensional ◽  
Petri Dish ◽  
Two Dimensions ◽  
Point Of View ◽  
Lack Of Information ◽  
Synthetic Materials ◽  
Different Types ◽  
Available Information ◽  
User Friendly

The classic cell culture involves the use of support in two dimensions, such as a well plate or a Petri dish, that allows the culture of different types of cells. However, this technique does not mimic the natural microenvironment where the cells are exposed to. To solve that, three-dimensional bioprinting techniques were implemented, which involves the use of biopolymers and/or synthetic materials and cells. Because of a lack of information between data sources, the objective of this review paper is, to sum up, all the available information on the topic of bioprinting and to help researchers with the problematics with 3D bioprinters, such as the 3D-Bioplotter™. The 3D-Bioplotter™ has been used in the pre-clinical field since 2000 and could allow the printing of more than one material at the same time, and therefore to increase the complexity of the 3D structure manufactured. It is also very precise with maximum flexibility and a user-friendly and stable software that allows the optimization of the bioprinting process on the technological point of view. Different applications have resulted from the research on this field, mainly focused on regenerative medicine, but the lack of information and/or the possible misunderstandings between papers makes the reproducibility of the tests difficult. Nowadays, the 3D Bioprinting is evolving into another technology called 4D Bioprinting, which promises to be the next step in the bioprinting field and might promote great applications in the future.

XXVIII.—The Arrangement of Fibre Follicles in some Mammals, with special reference tothe Ovidæ

1939 ◽  
Vol 59 (3) ◽  
pp. 763-771 ◽  
Author(s):  
J. E. Duerden
Keyword(s):  
Special Reference ◽  
Point Of View ◽  
Research Association ◽  
General Development ◽  
Initial Form ◽  
Genetic Unit ◽  
Different Types

At the time of his death Dr Duerden was contemplating the preparation of a paper of this nature, and it is felt by Mrs Duerden that had he been able to express his wishes in this connection he would appreciate a record of the conclusions made by him. No one realised more than Dr Duerden himself the gaps which are still present in our knowledge and interpretation of the grouping of follicles and fibres in the mammalia, and this work is certainly not meant to be taken as representing Dr Duerden's final view or those of his colleagues at the Wool Industries Research Association. In view of the unique value of much of the material the present notes are intended, therefore, to form a basis and reference, firstly, for workers engaged in the general development of any mammalian coat from a morphogenic and phylogenetic point of view, and secondly, for those interested particularly in factors concerned in the formation of different types of fleeces in sheep. The conception of the follicle bundle as a discrete and basic genetic unit largely determining the initial form of the wool staple is of the highest importance in studies on the inheritance and developmentof fleece characters.

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