Statement of Work-(Biotage-Flash Chromatography).docx

US Department of Agriculture (USDA)

Statement of Work

Contents

Project Purchase of flash chromatography system for the wood/plant cell wall and lignin research and BIL funded “Direct production of lignin-containing cellulose nanofibril (LCNF) and nanopaper (LCNP) from marginal wood for food packaging” project

General Information

1.0 Scope of Work

Introduction:

Lignin, a major component of wood and plant cell walls, is a complex polymer composed of various phenolic compounds. Understanding its structure through the synthesis of model compounds is essential for advancing biomass and biofuel research. This study focuses on the synthesis of lignin model compounds and the subsequent separation of crude synthetic mixtures using organic chemistry techniques.

Objectives:

1. To synthesize lignin model compounds using advanced organic chemistry methods.

2. To separate and purify crude synthetic mixtures to obtain high-purity lignin model compounds.

3. To provide detailed analytical results to the forest products, wood/plant cell wall, and biomass research communities.

Methodology:

1. Synthesis of Lignin Model Compounds:

· Utilize various organic chemistry techniques to synthesize a range of lignin model compounds.

· Employ reaction conditions optimized for the formation of desired phenolic structures.

2. Separation and Purification:

· Apply chromatographic techniques, such as column chromatography and high-performance liquid chromatography (HPLC), to separate crude synthetic mixtures.

· Use recrystallization and other purification methods to achieve high-purity lignin model compounds.

3. Analytical Characterization:

· Characterize the synthesized and purified lignin model compounds using spectroscopic techniques such as NMR, MS, and IR.

· Collect and interpret data to confirm the structures of the lignin model compounds.

Expected Outcomes:

1. Successful synthesis of various lignin model compounds using organic chemistry techniques.

2. Efficient separation and purification of crude synthetic mixtures to obtain high-purity products.

3. Detailed characterization of lignin model compounds, providing new insights into lignin structure and reactivity.

Significance:

This research will contribute to a deeper understanding of lignin structure and its role in plant cell walls. The synthesized model compounds will serve as valuable tools for studying lignin reactivity and interactions, supporting advancements in biomass and biofuel technologies. Ultimately, this work aims to aid in the development of sustainable forest products and the efficient utilization of biomass resources.

2.0 Background

Lignin, a key component of wood and plant cell walls, is critical for the structural integrity and functional properties of these materials. To advance the production of lignin-containing cellulose nanofibrils (LCNF) and lignin-containing cellulose nanopaper (LCNP) from marginal wood for food packaging, understanding the structure and reactivity of lignin is essential. This study emphasizes the importance of using flash chromatography to isolate and purify lignin model compounds, which are fundamental for optimizing the production processes.

Successful lignin structural characterization requires the critical step of lignin isolation. Once isolated, lignins are subjected to various analytical techniques, including the NMR method, to elucidate their complex structures. This combination of advanced sample preparation and sophisticated analytical techniques enables a comprehensive understanding of plant cell wall composition and lignin structures.

Role of Flash Chromatography:

Flash chromatography plays a vital role in this process by providing a means to purify crude synthetic mixtures, including lignin model compounds. This technique offers several advantages:

· High Purity: Flash chromatography ensures the isolation of highly pure lignin model compounds, free from impurities that could interfere with structural analysis.

· Speed and Efficiency: This method is faster and more efficient than traditional separation techniques, allowing for rapid processing of multiple samples.

· Scalability: Flash chromatography can handle larger quantities of material, making it suitable for extensive research projects.

By employing flash chromatography to purify lignin model compounds, we can obtain the high-quality samples needed for correct structural characterization through NMR analysis and other techniques. These purified model compounds provide valuable insights into the chemical and physical behavior of lignin during pretreatment and mechanical fibrillation processes. Understanding these interactions is crucial for optimizing the production of LCNF and LCNP.

The results of this study will significantly contribute to biomass and biofuel research, offering new insights and advancements in the characterization of wood and plant cell walls. This research aims to support the development of sustainable forest products and the efficient utilization of biomass resources. By leveraging flash chromatography, we can enhance our understanding of lignin and improve the processes for producing innovative, high-performance materials for food packaging.

Contractor Requirements

3.0 Technical Requirements / Tasks

- Four Solvent Channels allowing two different solvent systems (such as normal and reverse phase) to be set up simultaneously

- Two Column Channels that can each be dedicated to a solvent system

- Maximum Flow Rate: 300 mL/min and pressure capacity of 30 bar

- Maximum Pressure Limit: 400 psi

- Column Size Range: Up to 340 g

- Routinely run lab scale columns from 5 to 340 g for laboratory scale reactions

- With the addition of a safety valve, it can run columns up to 1.85 kg for larger scale reactions.

- Full UV/Vis detection -Packable Columns -User friendly and reliable

4.0 Government Furnished

N/A

5.0 Deliverables / Schedule

Delivery to US Forest Service, Attn: Hoon Kim, 507 Highland Ave. Madison, WI 53705 Estimated delivery date 8/20/2024

6.0 Travel

Only needed for installation or training.

7.0 Contractor’s Key Personnel

N/A

8.0 Security Requirements

N/A

9.0 Data Rights

N/A

10.0 Section 508 – Electronic and Information Technology Standards N/A image1.png