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Reports from Sao Paulo State University Add New Data to Findings in Spectroscopy

Reports from Sao Paulo State University Add New Data to Findings in Spectroscopy (Potential of Laser Induced Breakdown Spectroscopy for analyzing the quality of unroasted and ground coffee)

By a News Reporter-Staff News Editor at Science Letter — Investigators discuss new findings in Spectroscopy. According to news originating from Araraquara, Brazil, by NewsRx correspondents, research stated, “Coffee is an important commodity and a very popular beverage around the world. Its economic value as well as beverage quality are strongly dependent of the quality of beans.”

Financial support for this research came from Brazilian Ministry of Agriculture and Embrapa (see also Spectroscopy).

Our news journalists obtained a quote from the research from Sao Paulo State University, “The presence of defective beans in coffee blends has caused a negative impact on the beverage Global Quality (GQ) assessed by cupping tests. The main defective beans observed in the productive chain has been those Blacks, Greens and Sours (BGS). Chemical composition of BGS has a damaging impact on beverage GQ That is why analytical tools are needed for monitoring and controlling the GQ in coffee agro-industry. Near Infrared Spectroscopy (NIRS) has been successfully applied for assessment of coffee quality. Another potential technique for direct, clean and fast measurement of coffee GQ is Laser Induced Breakdown Spectroscopy (LIBS). Elements and diatomic molecules commonly present in organic compounds (structure) can be assessed by using LIBS. In this article is reported an evaluation of LIBS for the main interferents of GQ (BGS defects).”

According to the news editors, the research concluded: “Results confirm the great potential of LIBS for discriminating good beans from those with BGS defects by using emission lines of C, CN, C-2 and N. Most importantly, some emission lines presented strong linear correlation (r >0.9) with NIRS absorption bands assigned to proteins, lipids, sugar and carboxylic adds, suggesting LIBS potential to estimate these compounds in unroasted and ground coffee samples.”

For more information on this research see: Potential of Laser Induced Breakdown Spectroscopy for analyzing the quality of unroasted and ground coffee. Spectrochimica Acta Part B-Atomic Spectroscopy, 2017;135():29-33. Spectrochimica Acta Part B-Atomic Spectroscopy can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.

The news correspondents report that additional information may be obtained from E.C. Ferreira, Sao Paulo State Univ, UNESP, Analyt Chem Department, BR-14801970 Araraquara, SP, Brazil. Additional authors for this research include S.Z. Hubinger, J.A.G. Neto, D. Milori, E.J. Ferreira and T.V. Silva.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.sab.2017.06.015. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

Keywords for this news article include: Araraquara, Brazil, South America, Spectroscopy, Beverage, Food, Sao Paulo State University.

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