Downstream Processing
Downstream Processing - Related Videos
01:29
Downstream Processing
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2026
Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...
04:44
Processing of a Mouse Brain for Downstream Analysis
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2025
This video demonstrates a detailed step-by-step protocol for preparing frozen mouse brain tissue sections for downstream analyses.
11:30
Automating Citrus Budwood Processing for Downstream Pathogen Detection Through Instrument Engineering
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2023
We engineered, fabricated, and validated an instrument that rapidly processes phloem-rich bark citrus budwood tissues. Compared to current methods, the budwood tissue extractor (BTE) has increased sample throughput and decreased the required labor and equipment costs.
10:58
A Protocol for Lentiviral Transduction and Downstream Analysis of Intestinal Organoids
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Cited by 81 •
2015
In this video protocol we give a step by step explanation of lentiviral transduction in organoids of primary intestinal epithelium and of processing and downstream analysis of these cultures by quantitative RT-PCR, RNA-microarray and immunohistochemistry.
09:23
Dissection and Downstream Analysis of Zebra Finch Embryos at Early Stages of Development
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Cited by 2 •
2014
The zebra finch (Taeniopygiaguttata) is a valuable model organism; however, early stages of zebra finch development have not been extensively studied. The protocol describes how to dissect early embryos for developmental and molecular applications.
FAQs
Method selection depends on which product property can be exploited most effectively. Filtration separates by size, centrifugation by density, and chromatography by charge or affinity; extraction and precipitation rely on solubility differences. Using the most suitable separation principle can protect the product while improving purity and recovery, but engineers must also consider cost and throughput.
Each operation changes the composition and volume of the process stream, influencing what the next operation can handle. Clarification and solid removal can prepare material for concentration, while purification and formulation help preserve quality and stability. Integrating these stages lets engineers balance yield, purity, throughput, and cost across the complete process.
Product behavior determines which separation mechanism is practical and how strongly conditions must protect quality. Differences in charge or affinity can support chromatography, whereas solubility differences can support precipitation or extraction. Because no single method addresses every requirement, engineers combine operations to obtain a usable material with suitable purity, stability, and recovery.
Planning commonly starts with clarification or removal of cells and other solids, followed by concentration and one or more separation or purification stages. The recovered product is then prepared through formulation and, when appropriate, drying. The exact sequence depends on the process stream and the desired balance among product quality, recovery, throughput, and cost.
Engineers may combine filtration, centrifugation, extraction, precipitation, chromatography, and drying. These operations address different needs rather than serving as interchangeable choices: filtration and centrifugation support removal of cells or solids, concentration reduces process volume, and chromatography can exploit charge or affinity for purification. Their combination creates a tailored route for the specific product.
It is important wherever a synthesized or produced material must become a usable product, including pharmaceuticals, food ingredients, industrial enzymes, and other manufactured products. A well-designed sequence can improve yield, purity, and stability while supporting scale-up and throughput. These outcomes connect laboratory or production operations with practical requirements for consistent product preparation.