Sucrose Metabolism
Sucrose Metabolism - Related Videos
11:00
Liquid Phase Reactor: Sucrose Inversion
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Both batch and continuous flow reactors are used in catalytic reactions. Packed beds, which use solid catalysts and a continuous flow, are the most common configuration. In the absence of an extensive recycle stream, such packed bed reactors are typically modeled as "plug flow". The other most common continuous reactor is a stirred tank, which is assumed to be perfectly...
03:36
Purification of Bacteriophages Using a Sucrose Density Gradient
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2026
Source: Rustad, M., et.al. Synthesis of Infectious Bacteriophages in an E. coli-based Cell-free Expression System. J. Vis. Exp. (2017)This video demonstrates the purification of bacteriophages from a suspension containing host bacterial debris using a sucrose density gradient. It shows how the density gradient separates phages by buoyant density, enabling recovery of a visible band for resuspension and further analysis.
12:44
A General Method for Evaluating Incubation of Sucrose Craving in Rats
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Cited by 25 •
2011
Responding for food or drug-paired cues increases over the course of a period of abstinence and this may relate to an increased susceptibility to relapse behaviors. Here we detail a procedure for evaluating this "incubation of craving" in rats that have self-administered sucrose.
03:39
Preparation of Virus-Enriched Suspension Using Stepwise Sucrose Centrifugation
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2026
Source: Vijayraghavan, S. and Kantor, B. A Protocol for the Production of Integrase-deficient Lentiviral Vectors for CRISPR/Cas9-mediated Gene Knockout in Dividing Cells. J. Vis. Exp., (2017)This video demonstrates a two-step ultracentrifugation method using sucrose gradients and cushions to purify and concentrate viral particles from cell culture supernatant. The procedure enables separation based on buoyant density, allowing recovery of intact virus suitable for downstream applications.
00:52
What is Metabolism?
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2019
Overview Metabolism represents all of the chemical activity in a cell, including reactions that build molecules (anabolism) and those that break molecules down (catabolism). Anabolic reactions require energy, whereas catabolic reactions provide it. Thus, metabolism describes how cells transform energy through a variety of chemical reactions, which are often made more efficient with the help of enzymes. Metabolism Is the Sum of All of the Chemical Reactions That Take Place in an Organism
FAQs
Sucrose formation in photosynthetic tissues depends on the coordinated action of sucrose-phosphate synthase and sucrose-phosphate phosphatase. The first enzyme participates in producing sucrose phosphate from triose-phosphate-derived carbon, while the second produces sucrose from that phosphorylated intermediate. Examining both steps helps researchers determine how photosynthetic carbon becomes a transportable and storable carbohydrate.
Source tissues generate sucrose from photosynthetic products, whereas sink tissues receive it and use the incoming carbon for respiration, growth, or storage. This arrangement links production with demand rather than treating carbohydrate synthesis and utilization as separate events. Changes in sink development can therefore influence how effectively carbon is allocated throughout the plant.
Invertases and sucrose synthase provide distinct enzymatic routes for cleaving sucrose in sink tissues. Both contribute to producing glucose and fructose, but identifying which route is active helps connect sucrose utilization with the tissue's metabolic role. This distinction is useful when studying whether imported carbohydrate primarily supports respiration, growth, or storage.
Environmental conditions can alter the balance between sucrose production, transport, storage, and breakdown. Because these processes coordinate carbon allocation, such changes may affect how much carbohydrate reaches developing or storage tissues and how effectively it is used. Studying these responses helps explain plant stress adaptation and reveals why carbohydrate distribution can vary with environmental circumstances.
A useful investigation should follow carbon across the major stages: formation in photosynthetic tissues, movement toward sink tissues, storage, and enzymatic breakdown. It should also compare these processes across developmental stages or environmental conditions when relevant. This organization connects biochemical events with whole-plant outcomes such as growth, seed or fruit development, and carbohydrate accumulation.
This topic is particularly informative when researchers need to explain plant productivity, developmental carbon demands, or the formation of carbohydrate reserves. It provides a framework for examining seed and fruit development as well as responses to environmental conditions. The same framework can support efforts to improve crop yield by understanding how plants allocate and use photosynthetic carbon.
Research can identify how carbon allocation relates to crop yield and carbohydrate quality. By examining synthesis in photosynthetic tissues, movement to sinks, and breakdown or storage in developing organs, investigators can connect enzyme-mediated processes with agriculturally important outcomes. This approach is relevant to crops in which seed, fruit, or stored carbohydrate production determines quality or productivity.