Freeze Drying Biomass
Freeze Drying Biomass - Related Videos
08:55
Formulations for Freeze-drying of Bacteria and Their Influence on Cell Survival
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Cited by 22 •
2013
Freeze-drying is often an easy and convenient way to obtain dry products of viable bacterial cells. An issue of the process is cell survival. We detail here a procedure to investigate how cell survival during freeze-drying is influenced by the properties of the formulation used.
06:57
Rapid High Throughput Amylose Determination in Freeze Dried Potato Tuber Samples
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Cited by 22 •
2013
This protocol describes a high through put colorimetric method that relies on the formation of a complex between iodine and chains of glucose molecules in starch. Iodine forms complexes with both amylose and long chains within amylopectin. After the addition of iodine to a starch sample, the maximum absorption of amylose and amylopectin occurs at 620 and 550 nm, respectively. The amylose/amylopectin ratio can be estimated from the ratio of the 620 and 550 nm absorbance values and comparing them...
10:16
Point-of-care CRISPR-based Diagnostics with Premixed and Freeze-dried Reagents
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Cited by 9 •
2024
Here, we present the step-by-step preparation of premixed, lyophilized recombinase-based isothermal amplification and Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-based reactions, which can be used for the detection of nucleic acid biomarkers of infectious disease pathogens or other genetic markers of interest.
12:00
Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro
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Cited by 9 •
2017
This work details a step-by-step method to prepare polyphenol-rich extracts from freeze-dried berry powder. In addition, it provides a thorough description of how to use these polyphenol-rich extracts in cell culture in the presence of the peptide hormone angiotensin II (Ang II) using Vascular Smooth Muscle Cells (VSMCs).
10:42
Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Cited by 65 •
2016
The pretreatment of lignocellulosic biomass with protic low-cost ionic liquids is shown, resulting in a delignified cellulose-rich pulp and a purified lignin. The pulp gives rise to high glucose yields after enzymatic saccharification.
FAQs
Freezing, reduced pressure, and controlled heat must work together to support sublimation rather than melting. Freezing establishes the solid state, reduced pressure enables ice to leave as vapor, and controlled heat supplies energy without relying on high temperatures. This coordination helps preserve biomass structure and chemical composition for later analysis.
Liquid water can promote degradation, while high temperatures can alter the material being studied. By moving ice directly to vapor, the process limits those exposures and better retains the sample’s original structural and chemical characteristics. That matters when researchers need results that reflect differences among biomass samples rather than changes introduced during preservation.
Consistent processing improves comparability among samples collected from different sites or seasons. If preservation better maintains each sample’s original structure and chemical composition, observed differences are more likely to represent environmental or biological variation. This makes the resulting material more suitable for reliable compositional analysis and comparisons across environmental conditions.
The workflow starts by freezing the biological material, then lowering pressure and applying controlled heat. Under these conditions, ice leaves the sample as vapor through sublimation. The resulting preserved biomass can then be stored or used for analysis, while limiting degradation associated with liquid water and high-temperature treatment.
The approach can prepare plant, algal, microbial, and other biological samples collected for environmental research. These materials may require preservation before researchers examine composition or assess contaminants. Using the same preservation approach across different biomass types can support organized analysis of biological resources and comparisons among collection sites or seasons.
Prepared biomass can support compositional analysis, contaminant assessment, and comparisons across collection sites or seasons. These uses allow researchers to examine how biological materials differ across environmental settings or collection periods. Stabilized samples can also support downstream processing, helping investigators evaluate biological resources and study patterns associated with environmental change.