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LeClerc HO, Tompsett GA, Paulsen AD, McKenna AM, Niles SF, Reddy CM, Nelson RK, Cheng F, Teixeira AR, Timko MT. Hydroxyapatite catalyzed hydrothermal liquefaction transforms food waste from an environmental liability to renewable fuel. iScience 2022; 25:104916. [PMID: 36148430 PMCID: PMC9486744 DOI: 10.1016/j.isci.2022.104916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/25/2022] [Accepted: 08/06/2022] [Indexed: 11/30/2022] Open
Abstract
Food waste is an abundant and inexpensive resource for the production of renewable fuels. Biocrude yields obtained from hydrothermal liquefaction (HTL) of food waste can be boosted using hydroxyapatite (HAP) as an inexpensive and abundant catalyst. Combining HAP with an inexpensive homogeneous base increased biocrude yield from 14 ± 1 to 37 ± 3%, resulting in the recovery of 49 ± 2% of the energy contained in the food waste feed. Detailed product analysis revealed the importance of fatty-acid oligomerization during biocrude formation, highlighting the role of acid-base catalysts in promoting condensation reactions. Economic and environmental analysis found that the new technology has the potential to reduce US greenhouse gas emissions by 2.6% while producing renewable diesel with a minimum fuel selling price of $1.06/GGE. HAP can play a role in transforming food waste from a liability to a renewable fuel. Catalysts boost yields obtained from hydrothermal liquefaction (HTL) of food waste HAP-catalyzed HTL has the potential to reduce US greenhouse gas emissions by 2.6 Catalytic food waste HTL can produce fuel with an MFSP of $1.06/GGE
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Affiliation(s)
- Heather O. LeClerc
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Geoffrey A. Tompsett
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Alex D. Paulsen
- Mainstream Engineering Corporation, 200 Yellow Place, Rockledge, FL 32955, USA
| | - Amy M. McKenna
- National High Magnetic Field Laboratory, 1800 Paul Dirac Dr., Tallahassee, FL 32310, USA
- Department of Soil & Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Sydney F. Niles
- National High Magnetic Field Laboratory, 1800 Paul Dirac Dr., Tallahassee, FL 32310, USA
| | | | - Robert K. Nelson
- Woods Hole Oceanographic Institution, 86 Water St., Falmouth, MA 02543, USA
| | - Feng Cheng
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Andrew R. Teixeira
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Michael T. Timko
- Department of Chemical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
- Corresponding author
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Dahiya R, Dahiya S, Shrivastava J, Fuloria NK, Gautam H, Mourya R, Fuloria S. Natural cyclic polypeptides as vital phytochemical constituents from seeds of selected medicinal plants. Arch Pharm (Weinheim) 2021; 354:e2000446. [PMID: 33522644 DOI: 10.1002/ardp.202000446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022]
Abstract
Cyclopolypeptides are among the most predominant biomolecules in nature, especially those derived from plant seeds. This category of compounds has gained extraordinary attention due to remarkable variety of structures and valuable biofunctions. These congeners display enormous variation in terms of both structure and function and are the most significant biomolecules due to their widespread bioproperties. The estrogenic activity, immunosuppressive activity, cytotoxicity, vasorelaxant activity, and other properties possessed by cyclic peptides from seeds of plants make these congeners attractive leads for the drug discovery process. The current study covers the important structural features, structure-activity relationship, synthesis methods, and bioproperties of plant seeds-originated bioactive peptides from Vaccaria segetalis, Linum usitatissimum, and Goniothalamus leiocarpus, which may prove vital for the development of novel therapeutics based on a peptide skeleton.
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Affiliation(s)
- Rajiv Dahiya
- Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad & Tobago, West Indies
| | - Sunita Dahiya
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico, USA
| | - Jyoti Shrivastava
- Department of Pharmaceutical Chemistry, The Oxford College of Pharmacy, Bangalore, Karnataka, India
| | - Neeraj K Fuloria
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, AIMST University, Bedong, Kedah, Malaysia
| | - Hemendra Gautam
- Department of Pharmacy Practice, Arya College of Pharmacy, Bareilly, Uttar Pradesh, India
| | - Rita Mourya
- Department of Pharmaceutical Chemistry, Lakshmi Narain College of Pharmacy, Bhopal, Madhya Pradesh, India
| | - Shivkanya Fuloria
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, AIMST University, Bedong, Kedah, Malaysia
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Park J, Chen DYK. A Desymmetrization-Based Total Synthesis of Reserpine. Angew Chem Int Ed Engl 2018; 57:16152-16156. [PMID: 30407710 DOI: 10.1002/anie.201810974] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Indexed: 11/10/2022]
Abstract
Reported herein is a desymmetrization-based synthetic approach to the fused polycyclic indole alkaloid reserpine. The centerpiece of the developed strategy features an internal desymmetrization process that enabled the use of a readily accessible and nonstereogenic reserpine E-ring precursor, in contrast to the synthesis-intensive and stereodefined E-ring intermediates employed in all past reserpine syntheses. Utilization of inexpensive reagents through an orchestrated sequence of carefully selected chemical transformations further highlight the overall effectiveness of the developed pathway.
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Affiliation(s)
- Jisook Park
- Department of Chemistry, Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - David Y-K Chen
- Department of Chemistry, Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
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Affiliation(s)
- Jisook Park
- Department of ChemistrySeoul National University Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
| | - David Y.‐K. Chen
- Department of ChemistrySeoul National University Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 08826 South Korea
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Lamping M, Grell Y, Geyer A. Synthesis and conformational analysis of an expanded cyclic ketoxime-hexapeptide. J Pept Sci 2016; 22:228-35. [PMID: 27028207 DOI: 10.1002/psc.2873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/16/2016] [Accepted: 02/16/2016] [Indexed: 01/02/2023]
Abstract
In this work the synthesis of a linear hexapeptide with a hydroxylamine functionality at the N-terminus and a ketone instead of the carboxylic acid at the C-terminus is described. Cyclization by ketoxime formation yields the 19-membered ring-expanded cyclic hexapeptide cyclo[Goly-Val-Ala-Pro-Leu-Kly] which adopts a main conformer with two intramolecular hydrogen bonds. The hydrolytic stability of a ketoxime lies between the inert amide and the labile imine. The substitution of an amide bond for an iminium bond transforms the irreversible macrocyclization into a reversible process, but macrocyclic imines are difficult to isolate because they are prone to hydrolysis. The enhanced chemical stability of the ketoxime justifies its application in ligation protocols. The detailed NMR analysis of a ketoxime linkage presented here identifies its local conformational preferences in a constrained peptide environment.
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Affiliation(s)
- Matthias Lamping
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Yvonne Grell
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Armin Geyer
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
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