Microplastics are tangible particles of less than 0.2 inches in diameter that are ubiquitously distributed in the biosphere and accumulate in water bodies. During the east-coast hot summers (23–29 °C) of 2021 and 2022, June through September, we captured copious amounts of the jellyfish Chrysaora chesapeakei, a predominant species found in the Patuxent River of the Chesapeake Bay in Maryland on the United States East Coast. We determined that their gelatinous bodies trapped many microplastics through fluorescent microscopy studies using Rhodamine B staining and Raman Spectroscopy. The chemical nature of the microplastics was detected using gas chromatography–mass spectroscopy headspace (SPME-GC-MS) and solvent extraction (GC-MS) methods through a professional commercial materials evaluation laboratory. Numerous plastic-affiliated volatile organic compounds (VOCs) from diverse chemical origins and their functional groups (alkanes, alkenes, acids, aldehydes, ketones, ethers, esters, and alcohols) along with other non-microplastic volatile organic compounds were observed. Our findings corroborate data in the available scientific literature, distinguishing our finding’s suitability.
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Impact of the coffee berry borer on the volatile and semi-volatile compounds; qualitative profile of Coffea arabica berries
One of the main attributes that highlight the final quality of a gourmet cup of coffee is its aroma. Aromas vary according to a variety of plant and environmental variables, among others. This study aimed to characterize volatile and semivolatile compounds according to the Coffee arabica "Limani" berries ripening stages (healthy and brocaded). The study used different extraction methodologies to capture the broad spectrum of volatile, semivolatile organic compounds in coffee berries and berry borer (CBB). The methodologies used in the study included: enfleurage, headspace SPME (solid-phase microextraction), absorbent trap, and direct immersion SPME. Our study generated a Profile for coffee berries and CBB w with 228 compounds. Esters, cyclic, and benzyl compounds represent 65.6% of the total. The first three types of compounds that most attract our sense of smell constitute 40.5% of the compounds found; 1.3% aldehydes, 2.6% alcohols, and 36.6% benzyl. Overripe berries have high volatile emissions and show a composition dominated mainly by esters followed by alcohols, ketones, and aldehydes. The lowest-level compounds were monoterpenes. The number of compounds found in CBB varied according to sex. In summary, the CBB damage harms coffee berries' quality and aroma. The complete profile compounds generated will help better understand insect-plant relationships and potentially develop effective bait traps.
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- Award ID(s):
- 1736093
- PAR ID:
- 10497561
- Publisher / Repository:
- Elsevier
- Date Published:
- Journal Name:
- Food Chemistry Advances
- Volume:
- 2
- Issue:
- C
- ISSN:
- 2772-753X
- Page Range / eLocation ID:
- 100154
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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