Optimal Harvest Time
Optimal Harvest Time - Related Videos
12:29
Sterile Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research. The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting...
21:15
Diagnostic Necropsy and Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN Many animal experiments rely on final data collection time points that are gathered from the harvesting and testing of organs and tissues. The use of appropriate methods for the collection of organs and tissues can impact the quality of the samples and the analysis of the data that is gleaned for the testing of the tissues. The method of euthanasia of the animal can also impact the quality of...
04:03
Harvesting of Peroneus Longus Tendon Autograft
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Cited by 1 •
2025
This article provides a method for safely harvesting the full-thickness peroneus longus tendon autograft. It outlines critical steps, modifications, and troubleshooting for the procedure.
03:37
Optimal Foraging - Concepts
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2019
Optimal Foraging Organisms must acquire and use resources in their environment to survive. While food is one of the primary resources organisms must search for, individuals also need to seek habitats, shelter, and mates. This process of searching for resources is known as foraging, which involves a series of costs and benefits. More specifically, acquiring a resource provides the organism with a benefit, however, searching and capturing the resource requires expenditure of time and energy.
06:53
Selective Harvesting of Marginating-hepatic Leukocytes
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Cited by 1 •
2016
Marginating-hepatic leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe a method for selective harvesting of this specific hepatic cell population, through forced perfusion of the liver of rats or mice. Marginating-hepatic leukocytes seem critical in determining susceptibility to hepatic-related diseases and metastases.
FAQs
During maturation, target compounds may be produced, transformed into other substances, accumulated, or degraded. These competing changes mean a material’s chemical profile shifts over time. Tracking the direction and size of those changes helps identify when the desired composition is present, rather than relying on a fixed calendar point for the material being evaluated.
Optimal harvest time is selected around the composition that best serves the intended use, not necessarily the moment when one compound reaches its highest concentration. Chemical measurements can show whether active constituents are still accumulating, beginning to degrade, or accompanied by unwanted by-products. This supports a deliberate balance among composition, quality, and stability.
Concentration measurements show how much of a target compound is present, whereas quality tests assess broader material suitability. Using both allows researchers to distinguish a high measured concentration from a sample that also has acceptable quality and stability. This combined evidence is useful for plant extracts, food ingredients, essential oils, and pharmaceutical raw materials.
A chemically rich sample is not automatically the best harvest if its constituents are unstable or if unwanted by-products have accumulated. Evaluating stability alongside composition helps preserve material performance during subsequent processing and use. In manufacturing and research, this reduces variation between collections and improves confidence that results reflect a controlled raw material.
Researchers establish the window by tracking chemical changes across relevant maturation stages with markers, concentration measurements, and quality tests. They compare the resulting profiles with intended composition, quality, and stability requirements. The selected point becomes a controlled collection target that supports reproducible analysis and more consistent downstream processing.
Timing collection is valuable for plant extracts, food ingredients, essential oils, and pharmaceutical raw materials. In each case, the selected window can help maximize desired constituents, limit unwanted by-products, and improve stability. It also strengthens consistency in research measurements and manufacturing by providing raw materials with more predictable chemical composition and performance.