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Pante GC, Castro JC, Lini RS, Romoli JCZ, Pires TY, Garcia FP, Nakamura CV, Mulati ACN, Matioli G, Machinski Junior M. Inclusion Complexes of Litsea cubeba (Lour.) Pers Essential Oil into β-Cyclodextrin: Preparation, Physicochemical Characterization, Cytotoxicity and Antifungal Activity. Molecules 2024; 29:1626. [PMID: 38611905 PMCID: PMC11013208 DOI: 10.3390/molecules29071626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 04/14/2024] Open
Abstract
The uses of natural compounds, such as essential oils (EOs), are limited due to their instability to light, oxygen and temperature, factors that affect their application. Therefore, improving stability becomes necessary. The objective of this study was to prepare inclusion complexes of Litsea cubeba essential oil (LCEO) with β-cyclodextrin (β-CD) using physical mixing (PM), kneading (KN) and co-precipitation (CP) methods and to evaluate the efficiency of the complexes and their physicochemical properties using ATR-FTIR, FT-Raman, DSC and TG. The study also assessed cytotoxicity against human colorectal and cervical cancer cells and antifungal activity against Aspergillus flavus and Fusarium verticillioides. The complexation efficiency results presented significant evidence of LCEO:β-CD inclusion complex formation, with KN (83%) and CP (73%) being the best methods used in this study. All tested LCEO:β-CD inclusion complexes exhibited toxicity to HT-29 cells. Although the cytotoxic effect was less pronounced in HeLa tumor cells, LCEO-KN was more active against Hela than non-tumor cells. LCEO-KN and LCEO-CP inclusion complexes were efficient against both toxigenic fungi, A. flavus and F. verticillioides. Therefore, the molecular inclusion of LCEO into β-CD was successful, as well as the preliminary biological results, evidencing that the β-CD inclusion process may be a viable alternative to facilitate and increase future applications of this EO as therapeutic medication, food additive and natural antifungal agent.
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Affiliation(s)
- Giseli Cristina Pante
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Juliana Cristina Castro
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Renata Sano Lini
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Jéssica Cristina Zoratto Romoli
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Thiago Yoshioka Pires
- Department of Physics, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil (A.C.N.M.)
| | - Francielle Pelegrin Garcia
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Celso Vataru Nakamura
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
| | - Ana Claúdia Nogueira Mulati
- Department of Physics, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil (A.C.N.M.)
| | - Graciette Matioli
- Department of Pharmacy, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil;
| | - Miguel Machinski Junior
- Department of Health Basic Science, Laboratory of Toxicology, State University of Maringa, Avenue Colombo n° 5790, Maringa 87020-900, PR, Brazil; (G.C.P.); (R.S.L.); (J.C.Z.R.); (F.P.G.); (C.V.N.); (M.M.J.)
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Kampasakali E, Nakas A, Mertzanidis D, Kokkini S, Assimopoulou AN, Christofilos D. μ-Raman Determination of Essential Oils' Constituents from Distillates and Leaf Glands of Origanum Plants. Molecules 2023; 28:molecules28031221. [PMID: 36770888 PMCID: PMC9920943 DOI: 10.3390/molecules28031221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
A novel, inexpensive and simple experimental setup for collecting μ-Raman spectra of volatile liquids in very small quantities was developed. It takes advantage of capillary forces to detain minute volatile liquid volumes. Spectra of volatile and even scattering or absorbing media can be measured more effectively. The method is used to facilitate the collection of intensity-consistent Raman spectra from a series of reference compounds present in Origanum essential oils, in order to quantify their constituents by multiple linear regression. Wild grown Origanum plants, collected from five different regions in Greece and taxonomically identified as O. onites, O. vulgare subsp. hirtum and O. vulgare subsp. vulgare, were appropriately distilled to acquire their essential oils. Comparison of the Raman results with those from headspace gas chromatography-mass spectrometry (HS GC-MS) confirmed the successful relative quantification of the most abundant essential oil constituents, highlighting the similarities and differences of the three Origanum taxa examined. Finally, it is demonstrated that directly measuring the leaf peltate glandular hairs yields exploitable results to identify the main components of the essential oil they contain, underlining the potential of in situ (field or industry) measurements utilizing microscope-equipped portable Raman spectrometers.
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Affiliation(s)
- Elli Kampasakali
- School of Chemical Engineering & Physics Laboratory, Faculty of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alexandros Nakas
- Laboratory of Organic Chemistry, School of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Dimitrios Mertzanidis
- Laboratory of Systematic Botany and Phytogeography, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Stella Kokkini
- Laboratory of Systematic Botany and Phytogeography, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Andreana N. Assimopoulou
- Laboratory of Organic Chemistry, School of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Dimitrios Christofilos
- School of Chemical Engineering & Physics Laboratory, Faculty of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence:
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Huang X, Li H, Ruan Y, Li Z, Yang H, Xie G, Yang Y, Du Q, Ji K, Yang M. An integrated approach utilizing raman spectroscopy and chemometrics for authentication and detection of adulteration of agarwood essential oils. Front Chem 2022; 10:1036082. [PMID: 36618867 PMCID: PMC9810987 DOI: 10.3389/fchem.2022.1036082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/15/2022] [Indexed: 12/24/2022] Open
Abstract
Agarwood is a precious aromatic plant which has good pharmacological effects such as antidepressant and sedation. It also has good ornamental and collection value. However, due to it is long and complex production process, the output of agarwood essential oils (AEOs) is scarce, so the price is expensive, the quality is uneven, and the adulteration events is endless. From the commercial and pharmaceutical point of view, the authenticity and quality of the commercial products labeled as AEOs is very important. This paper tested the applicability of Raman spectroscopy combined with chemometrics in classification and authenticity identification of AEOs. In this study, Raman spectroscopy and principal component analysis (PCA) combined with partial least square discriminant analysis (PLS-DA) were used to comprehensively evaluate AEOs from different geographical origins and/or extracted by different methods which showed different characteristic bands. The characteristic component of AEOs, chromone derivatives, and two commonly used adulterants were also detected. These characteristic bands provide spectrum information of AEO samples and reference materials, which can be used as Raman spectral markers for the qualitative identification of AEOs. This study can provide a novel, fast and convenient method for identification of AEOs.
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Affiliation(s)
- Xiaoying Huang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Huiting Li
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China,*Correspondence: Huiting Li, ; Yinlan Ruan,
| | - Yinlan Ruan
- School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, China,*Correspondence: Huiting Li, ; Yinlan Ruan,
| | - Zhen Li
- School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, China
| | - Huda Yang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Guixin Xie
- School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, China
| | - Yi Yang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Qing Du
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China,Jiangxi Guxiangjinyun Great Health Industry Co. Ltd, Nanchang, China
| | - Kaidi Ji
- School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, China
| | - Ming Yang
- Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
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Kumari R, Sahu SK. A new insights into multicolor emissive carbon dots using Trachelospermum jasminoides leaves for the application of WLEDs. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128959] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gunasena MT, Rafi A, Mohd Zobir SA, Hussein MZ, Ali A, Kutawa AB, Abdul Wahab MA, Sulaiman MR, Adzmi F, Ahmad K. Phytochemicals Profiling, Antimicrobial Activity and Mechanism of Action of Essential Oil Extracted from Ginger ( Zingiber officinale Roscoe cv. Bentong) against Burkholderia glumae Causative Agent of Bacterial Panicle Blight Disease of Rice. PLANTS (BASEL, SWITZERLAND) 2022; 11:1466. [PMID: 35684239 PMCID: PMC9182640 DOI: 10.3390/plants11111466] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Essential oils protect plants, and due to their natural origin, there is much interest in using them as antimicrobial agents. The purpose of this study was to determine the phytochemical constituents of ginger essential oil (GEO), antimicrobial activity, and mode of action against Burkholderia glumae (Bg). In addition, the volatile active compounds (AIs) were studied using GC-MS, FTIR, and Raman spectroscopy. A total of 45 phytochemical components were detected and the most prevalent bioactive compounds were Geranial, 1,8-Cineole, Neral, Camphene, α-Zingiberene, and α-Farnesene. Furthermore, it was found that the most dominant terpenes in GEO were monoterpenes. The diameter zone of inhibition values varied from 7.1 to 15 mm depending on the concentration tested. In addition, the MIC and MBC values were 112.5 µL/mL. Faster killing time and lower membrane potential were observed in 1xMIC treatment compared to 0.5xMIC treatment, whereas the control had the maximum values. From observations of various images, it was concluded that the mode of action of GEO affected the cytoplasmic membrane, causing it to lose its integrity and increase its permeability. Therefore, the antibacterial study and mechanism of action revealed that GEO is very effective in suppressing the growth of B. glumae.
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Affiliation(s)
- Mahesh Tiran Gunasena
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
- Grain Legume and Oil Crop Research and Development Centre, Angunakolapelessa 82220, Sri Lanka
| | - Amara Rafi
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
| | - Syazwan Afif Mohd Zobir
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
| | - Mohd Zobir Hussein
- Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Asgar Ali
- Centre of Excellence for Postharvest Biotechnology (CEPB), School of Biosciences, University of Nottingham Malaysia, Semenyih 43500, Malaysia;
| | - Abdulaziz Bashir Kutawa
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
- Department of Plant Science and Biotechnology, Faculty of Life Science, Federal University Dutsin-Ma, Dutsin-Ma 821101, Nigeria
| | - Mohd Aswad Abdul Wahab
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
| | - Mohd Roslan Sulaiman
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Fariz Adzmi
- Institute of Plantation Studies (IKP), Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Khairulmazmi Ahmad
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.T.G.); (A.R.); (A.B.K.); (M.A.A.W.)
- Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia, Serdang 43400, Malaysia
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Infante VHP, Maia Campos PMBG, Gaspar LR, Darvin ME, Schleusener J, Rangel KC, Meinke MC, Lademann J. Safety and efficacy of combined essential oils for the skin barrier properties: In vitro, ex vivo and clinical studies. Int J Cosmet Sci 2022; 44:118-130. [PMID: 34986500 DOI: 10.1111/ics.12761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/03/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate the safety and the synergistic effects of tea tree, lavender, eucalyptus and tangerine essential oils in combination on the skin using in vitro, ex vivo and clinical studies. METHODS The phototoxicity was predicted using 3T3 neutral red uptake phototoxicity test (OECD TG 432). Skin penetration was evaluated by confocal Raman microspectroscopy using direct application of essential oils to pig ears. For the clinical studies, 40 participants were enrolled and randomized in three groups: (1) lavender, eucalyptus and tangerine, (2) the same essential oils plus melaleuca and (3) placebo group. The skin was evaluated by noninvasive techniques before and after a 90-day period of topical use. RESULTS The essential oils were non-phototoxic, but the tangerine oil showed dose-dependent cytotoxicity (IC50: 33.1 µg/ml), presenting 35% of penetration in the viable epidermis. On the contrary, 17.7 µg/ml in combination was applied per day in the clinical study and the penetration rate for the combinations (10%, 1.77 µg/ml achieving the viable epidermis) guaranteed the safety, since in the clinical study, the application of the four essential oils improved skin barrier and morphologic skin characteristics, as well as increased skin hydration and decreased sebum levels, with no unwanted effects reported. CONCLUSIONS All essential oils studied were considered non-cytotoxic or non-phototoxic separately except tangerine, which present a dose-dependent cytotoxicity. Finally, the essential oils in combination in an appropriate amount were safe and effective in the improvement of the hydrolipidic balance and morphological properties of the skin.
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Affiliation(s)
- Victor H P Infante
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Freie Universität Berlin, Department of Dermatology, Venereology and Allergology, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Patrícia M B G Maia Campos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lorena Rigo Gaspar
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maxim E Darvin
- Freie Universität Berlin, Department of Dermatology, Venereology and Allergology, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Schleusener
- Freie Universität Berlin, Department of Dermatology, Venereology and Allergology, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Karen C Rangel
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Martina C Meinke
- Freie Universität Berlin, Department of Dermatology, Venereology and Allergology, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jürgen Lademann
- Freie Universität Berlin, Department of Dermatology, Venereology and Allergology, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Low energy nanoemulsions as carriers for essential oils in topical formulations for antioxidant skin protection. HEMIJSKA INDUSTRIJA 2022. [DOI: 10.2298/hemind210509004g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In this study several essential oils (EOs): basil - BA, lemon balm - LB and
oregano - OR were incorporated into nanoemulsions (NEs) as prospective
carriers for natural and sensitive bioactives. NEs were prepared via the
phase inversion composition (PIC) method, which is an energy-efficient cold
process. Physicochemical stability of NEs was confirmed by particle size
distribution analysis, electrical conductivity and pH value measurements, as
well as by optical microscopy observations. The type of EO and the
surfactant and oil mix concentration were found to be crucial factors
governing the NE properties and stability. Raman spectra of the EOs
confirmed main active ingredients and provided detection of interactions
with the nanocarrier, which is a novel application of this technique. The
antioxidant activity towards DPPH radical in methanol was
concentration-dependent with a similar trend for individual oils and
oil-loaded NEs (OR> LB> BA). However, the ABTS test in an aqueous medium
revealed notable change in the order of activity after EO nanonisation at
higher EO concentrations. Overall, it was found that OR-NE was the most
effective and stable system, since OR acted as a co-stabiliser in the NE
formulation, and its remarkably high antioxidant activity was successfully
preserved during 6 months of storage.
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Abstract
The current consumer demands together with the international regulations have pushed the cosmetic industry to seek new active ingredients from natural renewable sources for manufacturing more eco-sustainability and safe products, with botanical extract being an almost unlimited source of these new actives. Essential oils (EOs) emerge as very common natural ingredients in cosmetics and toiletries as a result of both their odorous character for the design and manufacturing of fragrances and perfumes, and the many beneficial properties of their individual components (EOCs), e.g., anti-inflammatory, antimicrobial and antioxidant properties, and, nowadays, the cosmetic industry includes EOs or different mixtures of their individual components (EOCs), either as active ingredients or as preservatives, in various product ranges (e.g., moisturizers, lotions and cleanser in skin care cosmetics; conditioners, masks or antidandruff products in hair care products; lipsticks, or fragrances in perfumery). However, the unique chemical profile of each individual essential oil is associated with different benefits, and hence it is difficult to generalize their potential applications in cosmetics and toiletries, which often require the effort of formulators in seeking suitable mixtures of EOs or EOCs for obtaining specific benefits in the final products. This work presents an updated review of the available literature related to the most recent advances in the application of EOs and EOCs in the manufacturing of cosmetic products. Furthermore, some specific aspects related to the safety of EOs and EOCs in cosmetics will be discussed. It is expected that the information contained in this comprehensive review can be exploited by formulators in the design and optimization of cosmetic formulations containing botanical extracts.
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Lebanov L, Paull B. Smartphone-based handheld Raman spectrometer and machine learning for essential oil quality evaluation. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4055-4062. [PMID: 34554153 DOI: 10.1039/d1ay00886b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present a method, utilising a smartphone-based miniaturized Raman spectrometer and machine learning for the fast identification and discrimination of adulterated essential oils (EOs). Firstly, the approach was evaluated for discrimination of pure EOs from those adulterated with solvent, namely benzyl alcohol. In the case of ylang-ylang EO, three different types of adulteration were examined, adulteration with solvent, cheaper vegetable oil and a lower price EO. Random Forest and partial least square discrimination analysis (PLS-DA) showed excellent performance in discriminating pure from adulterated EOs, whilst the same time identifying the type of adulteration. Also, utilising partial least squares regression analysis (PLS) all adulterants, namely benzyl alcohol, vegetable oil and lower price EO, were quantified based on spectra recorded using the smartphone Raman spectrometer, with relative error of prediction (REP) being between 2.41-7.59%.
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Affiliation(s)
- Leo Lebanov
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia.
- ARC Industrial Transformation Research Hub for Processing Advanced Lignocellulosics Products (PALs), School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Brett Paull
- Australian Centre for Research on Separation Science (ACROSS), School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia.
- ARC Industrial Transformation Research Hub for Processing Advanced Lignocellulosics Products (PALs), School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
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Radomski FAD, de Araujo Duarte C, Ribeiro E, de Sá EL. Optical Investigation of Essential Oils Using Absorbance and Photoluminescence. APPLIED SPECTROSCOPY 2021; 75:1136-1145. [PMID: 33464154 DOI: 10.1177/0003702821989694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Essential oils are complex mixtures of organic substances with large commercial importance in the pharmaceutical, food, fragrance, and cosmetic industries due to their organoleptic and biological properties. Also, these materials are also luminescent what has taken several studies about its potential uses for the detection and quality control of essential oils, imaging, and for the investigation of the synergies of their constituents. Concerning this, the present work is dedicated to studying the optical properties of selected essential oils: citronella (Cymbopogon winterianus), Japanese mint (Mentha arvensis), clove bud (Syzygium aromaticum), and bergamot (Citrus bergamia). We carried out a comparative study of the photoluminescence and the ultraviolet-visible optical absorption (abs-UV-Vis) of these essential oils with their typical constituents. To inspect the effects of the intermolecular interactions on the optical response of these systems, mixtures between the essential oils constituents following the expected average percent mass fraction were also studied. From these experiments, the main results were bathochromic effects in the abs-UV-Vis spectra; excimer formation in citral, isopulegol, isomenthone, eugenol, and eugenyl acetate; excimer emission enhancing and specific solvent effect in the essential oils photoluminescence spectra. These results contribute to the knowledge of essential oils' applications, especially in the evaluation of components' interactions through a simple abs-UV-Vis assay.
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Affiliation(s)
| | | | - Evaldo Ribeiro
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Eduardo Lemos de Sá
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
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Design of Nanostructured Lipid Carriers Containing Cymbopogon martinii (Palmarosa) Essential Oil against Aspergillus nomius. Molecules 2021; 26:molecules26164825. [PMID: 34443412 PMCID: PMC8399424 DOI: 10.3390/molecules26164825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/01/2021] [Accepted: 08/06/2021] [Indexed: 12/03/2022] Open
Abstract
Palmarosa essential oil (PEO) is an alternative to synthetic fungicides to control the contamination by food-deteriorating fungi, such as Aspergillus nomius. Nonetheless, the low long-term stability and volatility hamper its utilization. Thus, this study aimed to develop nanostructured lipid carriers (NLCs) containing PEO to improve its stability and consequently prolong the activity against A. nomius. A mixture design was applied to find the best preparation conditions for antifungal activity. The characterization analyses included size measurements, zeta potential (ζ-potential), entrapment efficiency (EE), and antifungal activity (by inhibition of mycelial growth (IMG) and/or in situ test (pre-contaminated Brazil nuts) tests). The nanocarriers presented particle sizes smaller than 300 nm, homogeneous size distribution, ζ-potential of −25.19 to −41.81 mV, and EE between 73.6 and 100%. The formulations F5 and F10 showed the highest IMG value (98.75%). Based on the regression model, three optimized formulations (OFs) were tested for antifungal activity (IMG and in situ test), which showed 100% of inhibition and prevented the deterioration of Brazil nuts by A. nomius. The preliminary stability test showed the maintenance of antifungal activity and physicochemical characteristics for 90 days. These results suggest a promising system as a biofungicide against A. nomius.
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Tangpao T, Krutmuang P, Kumpoun W, Jantrawut P, Pusadee T, Cheewangkoon R, Sommano SR, Chuttong B. Encapsulation of Basil Essential Oil by Paste Method and Combined Application with Mechanical Trap for Oriental Fruit Fly Control. INSECTS 2021; 12:insects12070633. [PMID: 34357294 PMCID: PMC8303667 DOI: 10.3390/insects12070633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/06/2021] [Accepted: 07/09/2021] [Indexed: 11/25/2022]
Abstract
Simple Summary Essential oils of the Ocimum spp. comprised of the volatile phenylpropanoids known for the Oriental fruit fly attractant property. However, fully exposing the essential oils in the field limited their ability. Therefore, we proposed a cheap yet effective paste encapsulation technique combined with a plastic trap for controlling tropical fruit fly in tropical fruit orchard. Abstract In this work, the chemical compositions of basils oils, including those of lemon basil, white holy basil, Thai basil, tree basil and red holy basil, were analysed. Methyl eugenol was detected in all types of basils. The essential oils of red and white holy basils possessed a comparable ability (~25%) to attract male Oriental fruit fly to the synthesised fruit fly attractant in the laboratory experiment. To control the release of the active ingredients, the white holly basil oil (WBO) was encapsulated with maltodextrin (MD) and gum arabic (GA) by paste method. The essential oil is retained in the wall complex much longer with the addition of MD. The results also revealed that the combination of the MD:GA (25:75) had the highest loading efficiency of the oil (9.40%) as observed by the numerous porous structures by scanning electron microscopy. Fourier-transform infrared spectra of the encapsulated polymer confirmed traces of essential oil functional groups. The field test study advised that WBO-encapsulated products improved fruit fly attractive efficiency by maintaining the release rate of basil essential oil.
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Affiliation(s)
- Tibet Tangpao
- Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
- Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Patcharin Krutmuang
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (R.C.)
- Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wilawan Kumpoun
- Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Pensak Jantrawut
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Tonapha Pusadee
- Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
- Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Ratchadawan Cheewangkoon
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (R.C.)
- Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sarana Rose Sommano
- Plant Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
- Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
- Correspondence: (S.R.S.); (B.C.)
| | - Bajaree Chuttong
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand; (P.K.); (R.C.)
- Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: (S.R.S.); (B.C.)
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13
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Rather AH, Wani TU, Khan RS, Pant B, Park M, Sheikh FA. Prospects of Polymeric Nanofibers Loaded with Essential Oils for Biomedical and Food-Packaging Applications. Int J Mol Sci 2021; 22:4017. [PMID: 33924640 PMCID: PMC8069027 DOI: 10.3390/ijms22084017] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 02/08/2023] Open
Abstract
Essential oils prevent superbug formation, which is mainly caused by the continuous use of synthetic drugs. This is a significant threat to health, the environment, and food safety. Plant extracts in the form of essential oils are good enough to destroy pests and fight bacterial infections in animals and humans. In this review article, different essential oils containing polymeric nanofibers fabricated by electrospinning are reviewed. These nanofibers containing essential oils have shown applications in biomedical applications and as food-packaging materials. This approach of delivering essential oils in nanoformulations has attracted considerable attention in the scientific community due to its low price, a considerable ratio of surface area to volume, versatility, and high yield. It is observed that the resulting nanofibers possess antimicrobial, anti-inflammatory, and antioxidant properties. Therefore, they can reduce the use of toxic synthetic drugs that are utilized in the cosmetics, medicine, and food industries. These nanofibers increase barrier properties against light, oxygen, and heat, thereby protecting and preserving the food from oxidative damage. Moreover, the nanofibers discussed are introduced with naturally derived chemical compounds in a controlled manner, which simultaneously prevents their degradation. The nanofibers loaded with different essential oils demonstrate an ability to increase the shelf-life of various food products while using them as active packaging materials.
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Affiliation(s)
- Anjum Hamid Rather
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Taha Umair Wani
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Rumysa Saleem Khan
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
| | - Bishweshwar Pant
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-Gun 55338, Jeollabuk-do, Korea;
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-Gun 55338, Jeollabuk-do, Korea;
| | - Faheem A. Sheikh
- Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India; (A.H.R.); (T.U.W.); (R.S.K.)
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14
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Cebi N, Arici M, Sagdic O. The famous Turkish rose essential oil: Characterization and authenticity monitoring by FTIR, Raman and GC-MS techniques combined with chemometrics. Food Chem 2021; 354:129495. [PMID: 33743448 DOI: 10.1016/j.foodchem.2021.129495] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 02/05/2021] [Accepted: 02/25/2021] [Indexed: 12/27/2022]
Abstract
There is a necessity for rapid, robust, easy, accurate and cost-effective methodologies for the quality control of essential oils from medicinal and aromatic plants. Rosa damascena essential oil is a high-value natural product with its unique quality properties and economic importance. This research evaluated the capability of Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and gas chromatography-mass spectrometry (GC-MS) techniques combined with chemometrics for determination of the authenticity of R. damascena essential oil. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) were successfully employed with 100% accuracy for discrimination of authentic R. damascena essential oil samples from fraudulent commercial samples. Consistent results were obtained by FTIR, Raman and GC-MS techniques. Two of twenty commercial samples were determined as authentic R. damascena essential oil samples using the three analytical techniques. Findings showed that FTIR and Raman spectroscopy combined with chemometrics could be used as reliable, robust, rapid, accurate and low-cost analytical techniques for quality evaluation of R. damascena essential oil.
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Affiliation(s)
- Nur Cebi
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, 34210 Istanbul, Turkey.
| | - Muhammet Arici
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, 34210 Istanbul, Turkey
| | - Osman Sagdic
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, 34210 Istanbul, Turkey
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15
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Cebi N, Taylan O, Abusurrah M, Sagdic O. Detection of Orange Essential Oil, Isopropyl Myristate, and Benzyl Alcohol in Lemon Essential Oil by FTIR Spectroscopy Combined with Chemometrics. Foods 2020; 10:foods10010027. [PMID: 33374136 PMCID: PMC7824320 DOI: 10.3390/foods10010027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/15/2020] [Accepted: 12/19/2020] [Indexed: 01/14/2023] Open
Abstract
Essential oils are high-valued natural extracts that are involved in industries such as food, cosmetics, and pharmaceutics. The lemon essential oil (LEO) has high economic importance in the food and beverage industry because of its health-beneficial characteristics and desired flavor properties. LEO, similar to other natural extracts, is prone to being adulterated through economic motivations. Adulteration causes unfair competition between vendors, disruptions in national economies, and crucial risks for consumers worldwide. There is a need for cost-effective, rapid, reliable, robust, and eco-friendly analytical techniques to detect adulterants in essential oils. The current research developed chemometric models for the quantification of three adulterants (orange essential oil, benzyl alcohol, and isopropyl myristate) in cold-pressed LEOs by using hierarchical cluster analysis (HCA), principal component regression (PCR), and partial least squares regression (PLSR) based on FTIR spectra. The cold-pressed LEO was successfully distinguished from adulterants by robust HCA. PLSR and PCR showed high accuracy with high R2 values (0.99-1) and low standard error of cross-validation (SECV) values (0.58 and 5.21) for cross-validation results of the raw, first derivative, and second derivative FTIR spectra. The findings showed that FTIR spectroscopy combined with multivariate analyses has a considerable capability to detect and quantify adulterants in lemon essential oil.
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Affiliation(s)
- Nur Cebi
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, 34210 İstanbul, Turkey;
- Correspondence:
| | - Osman Taylan
- Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Mona Abusurrah
- Department of Management Information Systems, College of Business Administration, Taibah University, Madinah 42353, Saudi Arabia;
| | - Osman Sagdic
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Yıldız Technical University, 34210 İstanbul, Turkey;
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16
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Souza AG, Ferreira RR, Paula LC, Setz LF, Rosa DS. The effect of essential oil chemical structures on Pickering emulsion stabilized with cellulose nanofibrils. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114458] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Kubota H, Sakamoto K, Matsui T. A confocal Raman microscopic visualization of small penetrants in cellulose acetate using a deuterium-labeling technique. Sci Rep 2020; 10:16426. [PMID: 33009478 PMCID: PMC7532217 DOI: 10.1038/s41598-020-73464-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 09/08/2020] [Indexed: 11/09/2022] Open
Abstract
The purpose of the present study was to visualize the sorption dynamics of small compounds, such as propylene glycol (PG) in cellulose acetate (CA) film, by deuterium (d) labeling-aided confocal Raman spectroscopy (CRM). Substitution of hydrogen atoms in the target molecule with deuterium caused a marked shift of C-H bond-related Raman bands to low wavenumbers, while the number of deuterium did not affect the magnitude of the shift. Raman bands derived from the stretching vibration of C–H near 2900 cm−1 for PG and ethanol were shifted to approximately 2100 cm−1 for PG-d6 and ethanol-d5 in the silent region of the CA Raman spectrum. When PG-d6 was dissolved in glycerol triacetate (GTA), the observed Raman intensity ratio at 2123 cm−1 of PG-d6 against 1739 cm−1 of GTA (C=O bond-related) showed a linear relationship between the molar and intensity ratios, indicating that the observed Raman intensity can be used for quantitative assay of the target in polymer film. The depth profiling experiments by CRM revealed that the distribution (or sorption) of PG-d6 in CA film was successfully visualized as a function of Raman band at the characteristic 2123 cm−1 intensity ratio.
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Affiliation(s)
- Hiroyuki Kubota
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan. .,Tobacco Science Research Center, Japan Tobacco Inc., 6-2 Umegaoka, Aoba-ku, Yokohama, Kanagawa, 227-8512, Japan.
| | - Koji Sakamoto
- Tobacco Science Research Center, Japan Tobacco Inc., 6-2 Umegaoka, Aoba-ku, Yokohama, Kanagawa, 227-8512, Japan
| | - Toshiro Matsui
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
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18
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Taylan O, Cebi N, Tahsin Yilmaz M, Sagdic O, Bakhsh AA. Detection of lard in butter using Raman spectroscopy combined with chemometrics. Food Chem 2020; 332:127344. [PMID: 32619937 DOI: 10.1016/j.foodchem.2020.127344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 05/26/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023]
Abstract
There is a contentious need for robust and rapid methodologies for maintaining the authenticity of foods and food additives. The current paper presented a new Raman spectroscopy-based methodology for detection and quantification of lard in butter. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) were successfully performed for the classification and discrimination of butter and lard-adulterated samples. Strong discrimination pattern was observed in the HCA analysis. Also, partial least squares regression and principal component regression (R2 = 0.99) were applied for quantification of lard in butter samples. Quite favorable prediction capabilities were observed in the cross-validation of PLS and PCR analysis for the adulteration levels between 0% and 100% lard fat (w/w). Raman spectroscopy coupled chemometrics was employed effectively for quantification of lard fat in butter fat samples with easy, robust, effective, low-cost and reliable application in the quality control of butter.
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Affiliation(s)
- Osman Taylan
- Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
| | - Nur Cebi
- Yıldız Technical University, Davutpaşa Campus, Chemical and Metallurgical Engineering Faculty, Food Engineering Department, 34210 Istanbul, Turkey.
| | - Mustafa Tahsin Yilmaz
- Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
| | - Osman Sagdic
- Yıldız Technical University, Davutpaşa Campus, Chemical and Metallurgical Engineering Faculty, Food Engineering Department, 34210 Istanbul, Turkey
| | - Ahmed Atef Bakhsh
- Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
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19
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Park J, Thomasson JA, Gale CC, Sword GA, Lee KM, Herrman TJ, Suh CPC. Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas. ACS OMEGA 2020; 5:2779-2790. [PMID: 32095701 PMCID: PMC7033990 DOI: 10.1021/acsomega.9b03500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 01/29/2020] [Indexed: 05/08/2023]
Abstract
We developed a novel substrate for the collection of volatile organic compounds (VOCs) emitted from either living or dried plant material to be analyzed by surface-enhanced Raman spectroscopy (SERS). We demonstrated that this substrate can be utilized to differentiate emissions from blends of three teas, and to differentiate emissions from healthy cotton plants versus caterpillar-infested cotton plants. The substrate we developed can adsorb VOCs in static headspace sampling environments, and VOCs naturally evaporated from three standards were successfully identified by our SERS substrate, showing its ability to differentiate three VOCs and to detect quantitative differences according to collection times. In addition, volatile profiles from plant materials that were either qualitatively different among three teas or quantitatively different in abundance between healthy and infested cotton plants were confirmed by collections on Super-Q resin for dynamic headspace and solid-phase microextraction for static headspace sampling, respectively, followed by gas chromatography to mass spectrometry. Our results indicate that both qualitative and quantitative differences can also be detected by our SERS substrate although we find that the detection of quantitative differences could be improved.
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Affiliation(s)
- Jinhyuk Park
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
- E-mail: . Tel: +1-979-224-7055
| | - J. Alex Thomasson
- Department
of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Cody C. Gale
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Gregory A. Sword
- Department
of Entomology, Texas A&M University, College Station, Texas 77843-2475, United States
| | - Kyung-Min Lee
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Timothy J. Herrman
- Office
of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, Texas 77841, United States
| | - Charles P.-C. Suh
- Insect
Control and Cotton Disease Research Unit, USDA, ARS, 2771 F&B
Road, College Station, Texas 77845, United States
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20
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Lach S, Jurczak P, Karska N, Kubiś A, Szymańska A, Rodziewicz-Motowidło S. Spectroscopic Methods Used in Implant Material Studies. Molecules 2020; 25:E579. [PMID: 32013172 PMCID: PMC7038083 DOI: 10.3390/molecules25030579] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 01/18/2020] [Accepted: 01/25/2020] [Indexed: 11/30/2022] Open
Abstract
It is recognized that interactions between most materials are governed by their surface properties and manifest themselves at the interface formed between them. To gain more insight into this thin layer, several methods have been deployed. Among them, spectroscopic methods have been thoroughly evaluated. Due to their exceptional sensitivity, data acquisition speed, and broad material tolerance they have been proven to be invaluable tools for surface analysis, used by scientists in many fields, for example, implant studies. Today, in modern medicine the use of implants is considered standard practice. The past two decades of constant development has established the importance of implants in dentistry, orthopedics, as well as extended their applications to other areas such as aesthetic medicine. Fundamental to the success of implants is the knowledge of the biological processes involved in interactions between an implant and its host tissue, which are directly connected to the type of implant material and its surface properties. This review aims to demonstrate the broad applications of spectroscopic methods in implant material studies, particularly discussing hard implants, surface composition studies, and surface-cell interactions.
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Affiliation(s)
- Sławomir Lach
- Correspondence: (S.L.); (S.R.-M.); Tel.: +48-58-523-5034 (S.L.); +48-58-523-5037 (S.R.-M.)
| | | | | | | | | | - Sylwia Rodziewicz-Motowidło
- Department of Biomedical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland; (P.J.); (N.K.); (A.K.); (A.S.)
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21
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Kharbach M, Marmouzi I, El Jemli M, Bouklouze A, Vander Heyden Y. Recent advances in untargeted and targeted approaches applied in herbal-extracts and essential-oils fingerprinting - A review. J Pharm Biomed Anal 2020; 177:112849. [DOI: 10.1016/j.jpba.2019.112849] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 12/12/2022]
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22
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Gojani AB, Palásti DJ, Paul A, Galbács G, Gornushkin IB. Analysis and Classification of Liquid Samples Using Spatial Heterodyne Raman Spectroscopy. APPLIED SPECTROSCOPY 2019; 73:1409-1419. [PMID: 31271293 DOI: 10.1177/0003702819863847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Spatial heterodyne spectroscopy (SHS) is used for quantitative analysis and classification of liquid samples. SHS is a version of a Michelson interferometer with no moving parts and with diffraction gratings in place of mirrors. The instrument converts frequency-resolved information into a spatially resolved one and records it in the form of interferograms. The back-extraction of spectral information is done by the fast Fourier transform. A SHS instrument is constructed with the resolving power 5000 and spectral range 522-593 nm. Two original technical solutions are used as compared to previous SHS instruments: the use of a high-frequency diode-pumped solid-state laser for excitation of Raman spectra and a microscope-based collection system. Raman spectra are excited at 532 nm at the repetition rate 80 kHz. Raman shifts between 330 cm-1 and 1600 cm-1 are measured. A new application of SHS is demonstrated: for the first time, it is used for quantitative Raman analysis to determine concentrations of cyclohexane in isopropanol and glycerol in water. Two calibration strategies are employed: univariate based on the construction of a calibration plot and multivariate based on partial least squares regression. The detection limits for both cyclohexane in isopropanol and glycerol in water are at a 0.5 mass% level. In addition to the Raman-SHS chemical analysis, classification of industrial oils (biodiesel, poly(1-decene), gasoline, heavy oil IFO380, polybutenes, and lubricant) is performed using the Raman-fluorescence spectra of the oils and principal component analysis. The oils are easily discriminated showing distinct non-overlapping patterns in the principal component space.
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Affiliation(s)
- Ardian B Gojani
- Federal Institute for Material Research and Testing (BAM), Berlin, Germany
| | - Dávid J Palásti
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm Square, Hungary
- Department of Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Dugonics Square, Hungary
| | - Andrea Paul
- Federal Institute for Material Research and Testing (BAM), Berlin, Germany
| | - Gábor Galbács
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm Square, Hungary
- Department of Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Dugonics Square, Hungary
| | - Igor B Gornushkin
- Federal Institute for Material Research and Testing (BAM), Berlin, Germany
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23
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Unalan I, Slavik B, Buettner A, Goldmann WH, Frank G, Boccaccini AR. Physical and Antibacterial Properties of Peppermint Essential Oil Loaded Poly ( ε-caprolactone) (PCL) Electrospun Fiber Mats for Wound Healing. Front Bioeng Biotechnol 2019; 7:346. [PMID: 32039166 PMCID: PMC6988806 DOI: 10.3389/fbioe.2019.00346] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to fabricate and characterize various concentrations of peppermint essential oil (PEP) loaded on poly(ε-caprolactone) (PCL) electrospun fiber mats for healing applications, where PEP was intended to impart antibacterial activity to the fibers. SEM images illustrated that the morphology of all electrospun fiber mats was smooth, uniform, and bead-free. The average fiber diameter was reduced by the addition of PEP from 1.6 ± 0.1 to 1.0 ± 0.2 μm. Functional groups of the fibers were determined by Raman spectroscopy. Gas chromatography-mass spectroscopy (GC-MS) analysis demonstrated the actual PEP content in the samples. In vitro degradation was determined by measuring weight loss and their morphology change, showing that the electrospun fibers slightly degraded by the addition of PEP. The wettability of PCL and PEP loaded electrospun fiber mats was measured by determining contact angle and it was shown that wettability increased with the incorporation of PEP. The antimicrobial activity results revealed that PEP loaded PCL electrospun fiber mats exhibited inhibition against Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) bacteria. In addition, an in-vitro cell viability assay using normal human dermal fibroblast (NHDF) cells revealed improved cell viability on PCL, PCLPEP1.5, PCLPEP3, and PCLGEL6 electrospun fiber mats compared to the control (CNT) after 48 h cell culture. Our findings showed for the first time PEP loaded PCL electrospun fiber mats with antibiotic-free antibacterial activity as promising candidates for wound healing applications.
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Affiliation(s)
- Irem Unalan
- Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Benedikt Slavik
- Chair of Aroma and Smell Research, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Andrea Buettner
- Chair of Aroma and Smell Research, Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Wolfgang H. Goldmann
- Department of Physics, Institute of Biophysics, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Gerhard Frank
- Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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24
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Georgiev V, Ananga A, Dincheva I, Badjakov I, Gochev V, Tsolova V. Chemical Composition, In Vitro Antioxidant Potential, and Antimicrobial Activities of Essential Oils and Hydrosols from Native American Muscadine Grapes. Molecules 2019; 24:molecules24183355. [PMID: 31540154 PMCID: PMC6767223 DOI: 10.3390/molecules24183355] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 11/16/2022] Open
Abstract
Essential oils and hydrosols of two cultivars of muscadine grapes (Muscadinia rotundifolia (Michx.) Small.) were obtained by hydro-distillation of flowers and berry skins. Twenty-three volatile compounds were identified in essential oils from the muscadine flowers, and twenty volatiles in their corresponding hydrosols. The composition of volatiles in berry skins differed significantly from that of the vine flowers. The antioxidant potential of investigated essential oils and hydrosols was evaluated using five in vitro assays: DPPH (2,2-diphenyl-1-picrylhydrazyl) method, TEAC (Trolox equivalent antioxidant capacity), FRAP (Ferric reducing antioxidant power), CUPRAC (cupric ion reducing antioxidant capacity), and NO (nitric oxide radical scavenging assay). The essential oils from the flowers of both cultivars showed the strongest antioxidant power, whereas the hydrosols were the significantly less active. All investigated essential oils showed very weak antibacterial activities against Bacillus cereus, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. However, the essential oils from the flowers of both cultivars showed moderate antifungal activities against Candida albicans, which were stronger for the oil from "Carlos" (white muscadine cultivar). To the best of our knowledge, this is the first report on obtaining and characterizing essential oils and hydrosols from muscadine grapes. This study demonstrated the variations in aromatic compounds accumulated in flowers and mature berry skins of muscadine grapes, and evaluated their possible antioxidant and antimicrobial activities. The presented results will be the base for future research, focused on a better understanding of the molecular and regulatory mechanisms involved in aromatic compound biosynthesis and accumulation in muscadine grapes.
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Affiliation(s)
- Vasil Georgiev
- Laboratory of Applied Biotechnology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 139 Ruski Blvd., 4000 Plovdiv, Bulgaria.
| | - Anthony Ananga
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Science, Florida A&M University, Tallahassee, FL 32317, USA.
- Food Science Program, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, FL 32307, USA.
| | - Ivayla Dincheva
- AgroBioInstitute Agricultural Academy, 8 Dr. Tsankov Blvd., 1164 Sofia, Bulgaria.
| | - Ilian Badjakov
- AgroBioInstitute Agricultural Academy, 8 Dr. Tsankov Blvd., 1164 Sofia, Bulgaria.
| | - Velizar Gochev
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University "P. Hilendarski", 4000 Plovdiv, Bulgaria.
| | - Violeta Tsolova
- Center for Viticulture and Small Fruit Research, College of Agriculture and Food Science, Florida A&M University, Tallahassee, FL 32317, USA.
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Chemical composition and biological activity of Mentha citrata Ehrh., essential oils growing in southern Algeria. Journal of Food Science and Technology 2019; 56:5346-5353. [PMID: 31749482 DOI: 10.1007/s13197-019-04005-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/25/2019] [Accepted: 08/01/2019] [Indexed: 10/26/2022]
Abstract
Three techniques, hydro distillation, steam distillation and microwave-assisted distillation, was used in this work to extract volatile secondary metabolites essential oils (EOs), from the aerial part of Mentha citrata Ehrh., plant (steams, leaves and flowers). The plant material was collected from a location called El-kobna in El-Oued province, southern Algeria during June 2018. The extracted Mentha citrata EOs, were analyzed using both gas chromatography coupled with flame ionization detector and gas chromatography attached with mass spectrometry detector techniques. The antioxidant activity of these EOs were evaluated in vitro using DPPH (2,2-diphenyl-1-picrylhydrazyl) free radicals scavenging activity and cytotoxic test. The results of the EOs analysis showed large variability of the chemical compositions for all techniques. Moreover, a promising cytotoxic activity on colon cancer cells was found.
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Al Riza DF, Widodo S, Purwanto YA, Kondo N. Combined fluorescence-transmittance imaging system for geographical authentication of patchouli oil. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 218:155-160. [PMID: 30981029 DOI: 10.1016/j.saa.2019.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/05/2019] [Accepted: 04/06/2019] [Indexed: 05/04/2023]
Abstract
Recently, demand for authentication technology is growing rapidly in an attempt to overcome counterfeiting of high-value agricultural products, such as patchouli oil. Fingerprinting methods based on spectroscopy are one such technology being used for authentication. However, the spectral datasets obtained are multivariate in nature; containing thousands of data points for a single sample, making data acquisition and processing time-consuming. Therefore, reduction and simplification in the number of variables used required is needed to provide a more rapid and applicable method. Color cameras, which can capture image in the visible region light, could be such an alternative spectral data acquisition approach. In this research, a simplified spectroscopy method was developed for origin authentication of patchouli oil. The system consists of front ultraviolet light induced (365 nm) fluorescence and a white LED-based backlighting imaging system that consecutively captures the fluorescence and transmittance characteristics of the oil in the visible region. From the captured images, features were extracted and analyzed using Principle Component Analysis (PCA) to identify important image features for discrimination of origin. From the samples measured, the samples clustered around three islands of origin in the PCA space. A classification model based on fluorescence and transmittance image features (color values) could discriminate origin classes with a total accuracy of 88.46%. A lower accuracy was found for the Java class due to low sample numbers. This result demonstrates that the proposed system has the potential to be a rapid authentication tool for determining the geographical origin of patchouli oils.
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Affiliation(s)
- Dimas Firmanda Al Riza
- Laboratory of Biosensing Engineering, Graduate School of Agriculture, Kyoto University, Kitashirakawa, 6068267 Kyoto, Japan; Department of Agricultural Engineering, Faculty of Agricultural Technology, University of Brawijaya, Jl. Veteran, 65145 Malang, Indonesia.
| | - Slamet Widodo
- Department of Mechanical and Biosystem Engineering, Bogor Agricultural University, Kampus IPB Darmaga, PO BOX 220, Bogor, West Java 16680, Indonesia
| | - Y Aris Purwanto
- Department of Mechanical and Biosystem Engineering, Bogor Agricultural University, Kampus IPB Darmaga, PO BOX 220, Bogor, West Java 16680, Indonesia; Center for Tropical Horticulture Studies, IPB, Bogor, Indonesia
| | - Naoshi Kondo
- Laboratory of Biosensing Engineering, Graduate School of Agriculture, Kyoto University, Kitashirakawa, 6068267 Kyoto, Japan
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Alginate/soy protein system for essential oil encapsulation with intestinal delivery. Carbohydr Polym 2018; 200:15-24. [DOI: 10.1016/j.carbpol.2018.07.033] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 12/24/2022]
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Al Riza DF, Widodo S, Purwanto YA, Kondo N. Authentication of the geographical origin of patchouli oil using front-face fluorescence spectroscopy and chemometric analysis. FLAVOUR FRAG J 2018. [DOI: 10.1002/ffj.3473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dimas Firmanda Al Riza
- Laboratory of Biosensing Engineering, Graduate School of Agriculture; Kyoto University; Kitashirakawa Kyoto Japan
- Department of Agricultural Engineering, Faculty of Agricultural Technology; University of Brawijaya; Jl. Veteran Malang Indonesia
| | - Slamet Widodo
- Department of Mechanical and Biosystem Engineering; Bogor Agricultural University; Kampus IPB Darmaga, PO Box 220 Bogor West Java Indonesia
| | - Y. Aris Purwanto
- Department of Mechanical and Biosystem Engineering; Bogor Agricultural University; Kampus IPB Darmaga, PO Box 220 Bogor West Java Indonesia
- Center for Tropical Horticulture Studies, IPB; Bogor Indonesia
| | - Naoshi Kondo
- Laboratory of Biosensing Engineering, Graduate School of Agriculture; Kyoto University; Kitashirakawa Kyoto Japan
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Egging V, Nguyen J, Kurouski D. Detection and Identification of Fungal Infections in Intact Wheat and Sorghum Grain Using a Hand-Held Raman Spectrometer. Anal Chem 2018; 90:8616-8621. [PMID: 29898358 DOI: 10.1021/acs.analchem.8b01863] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Global population growth drives increasing food demand, which is anticipated to increase by at least 20% over the next 15 years. Rapid detection and identification of plant pathogens allows for up to a 50% increase in the total agricultural yield worldwide. Current molecular methods for pathogen diagnostics, such as polymerase chain reaction (PCR), are costly, time-consuming, and destructive. These limitations recently catalyzed a push toward developing minimally invasive and substrate general techniques that can be used in the field for confirmatory detection and identification of plant pathogens. Raman spectroscopy (RS) is a noninvasive, nondestructive, and label-free technique that can be used to determine chemical structure of analyzed specimens. In this study, we demonstrate that by using a hand-held Raman spectrometer, we can identify whether wheat or sorghum grains are healthy or not and identify present plant pathogens. We show that RS enables diagnosis of simple diseases, such as ergot, that are caused by one pathogen, as well as complex diseases, such as black tip or mold, which are induced by several different pathogens. The combination of chemometric analysis and RS allows for distinguishing between healthy and infected grains with high accuracy. We also show that RS can be used to determine states of disease development on grain. These results demonstrate that Raman-based approach for disease detection on plants is sample agnostic.
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Affiliation(s)
- Veronica Egging
- Department of Biochemistry and Biophysics , Texas A&M University , College Station , Texas 77843 , United States
| | - Jasmine Nguyen
- Department of Biochemistry and Biophysics , Texas A&M University , College Station , Texas 77843 , United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics , Texas A&M University , College Station , Texas 77843 , United States.,The Institute for Quantum Science and Engineering , Texas A&M University , College Station , Texas 77843 , United States
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Vargas Jentzsch P, Gualpa F, Ramos LA, Ciobotă V. Adulteration of clove essential oil: Detection using a handheld Raman spectrometer. FLAVOUR FRAG J 2017. [DOI: 10.1002/ffj.3438] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paul Vargas Jentzsch
- Departamento de Ciencias Nucleares, Facultad de Ingeniería; Química y Agroindustria, Escuela Politécnica Nacional; Quito Ecuador
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD; Tumbaco Ecuador
| | | | - Luis A. Ramos
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD; Tumbaco Ecuador
- Facultad de Ciencias de la Ingeniería e Industrias; Universidad Tecnológica Equinoccial; Quito Ecuador
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Hanif MA, Nawaz H, Naz S, Mukhtar R, Rashid N, Bhatti IA, Saleem M. Raman spectroscopy for the characterization of different fractions of hemp essential oil extracted at 130°C using steam distillation method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 182:168-174. [PMID: 28431313 DOI: 10.1016/j.saa.2017.03.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 03/21/2017] [Accepted: 03/30/2017] [Indexed: 06/07/2023]
Abstract
In this study, Raman spectroscopy along with Principal Component Analysis (PCA) is used for the characterization of pure essential oil (pure EO) isolated from the leaves of the Hemp (Cannabis sativa L.,) as well as its different fractions obtained by fractional distillation process. Raman spectra of pure Hemp essential oil and its different fractions show characteristic key bands of main volatile terpenes and terpenoids, which significantly differentiate them from each other. These bands provide information about the chemical composition of sample under investigation and hence can be used as Raman spectral markers for the qualitative monitoring of the pure EO and different fractions containing different active compounds. PCA differentiates the Raman spectral data into different clusters and loadings of the PCA further confirm the biological origin of the different fractions of the essential oil.
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Affiliation(s)
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan.
| | - Saima Naz
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Rubina Mukhtar
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Nosheen Rashid
- Faisalabad Institute of Research Science and Technology (FIRST), Abbaspura, Faisalabad, Pakistan
| | - Ijaz Ahmad Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Saleem
- National Institute of Lasers and Optronics (NILOP), Islamabad, Pakistan
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Vargas Jentzsch P, Ciobotă V, Salinas W, Kampe B, Aponte PM, Rösch P, Popp J, Ramos LA. Distinction of Ecuadorian varieties of fermented cocoa beans using Raman spectroscopy. Food Chem 2016; 211:274-80. [PMID: 27283632 DOI: 10.1016/j.foodchem.2016.05.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 04/28/2016] [Accepted: 05/02/2016] [Indexed: 11/16/2022]
Abstract
Cocoa (Theobroma cacao) is a crop of economic importance. In Ecuador, there are two predominant cocoa varieties: National and CCN-51. The National variety is the most demanded, since its cocoa beans are used to produce the finest chocolates. Raman measurements of fermented, dried and unpeeled cocoa beans were performed using a handheld spectrometer. Samples of the National and CCN-51 varieties were collected from different provinces and studied in this work. For each sample, 25 cocoa beans were considered and each bean was measured at 4 different spots. The most important Raman features of the spectra were assigned and discussed. The spectroscopic data were processed using chemometrics, resulting in a distinction of varieties with 91.8% of total accuracy. Differences in the average Raman spectra of cocoa beans from different sites but within the same variety can be attributed to environmental factors affecting the cocoa beans during the fermentation and drying processes.
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Affiliation(s)
- Paul Vargas Jentzsch
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD, Av. Interoceánica km 14 ½, 170184 Tumbaco, Ecuador; Departamento de Ciencias Nucleares, Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, 170525 Quito, Ecuador
| | - Valerian Ciobotă
- Rigaku Analytical Devices, Pasedagplatz 3-4, 13088 Berlin, Germany
| | - Wilson Salinas
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD, Av. Interoceánica km 14 ½, 170184 Tumbaco, Ecuador
| | - Bernd Kampe
- Institut für Physikalische Chemie, and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Pedro M Aponte
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD, Av. Interoceánica km 14 ½, 170184 Tumbaco, Ecuador; Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito USFQ, Campus Cumbayá, Diego de Robles y Vía Interoceánica, 170157 Quito, Ecuador
| | - Petra Rösch
- Institut für Physikalische Chemie, and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Jürgen Popp
- Institut für Physikalische Chemie, and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, 07743 Jena, Germany; Leibniz-Institut für Photonische Technologien e.V. (IPHT), Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Luis A Ramos
- Ecuadorian Agency for Quality Assurance in Agriculture, AGROCALIDAD, Av. Interoceánica km 14 ½, 170184 Tumbaco, Ecuador.
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Hajiali H, Summa M, Russo D, Armirotti A, Brunetti V, Bertorelli R, Athanassiou A, Mele E. Alginate-lavender nanofibers with antibacterial and anti-inflammatory activity to effectively promote burn healing. J Mater Chem B 2016; 4:1686-1695. [PMID: 32263019 DOI: 10.1039/c5tb02174j] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
One of the current challenges in wound care is the development of multifunctional dressings that can both protect the wound from external agents and promote the regeneration of the new tissue. Here, we show the combined use of two naturally derived compounds, sodium alginate and lavender essential oil, for the production of bioactive nanofibrous dressings by electrospinning, and their efficacy for the treatment of skin burns induced by midrange ultraviolet radiation (UVB). We demonstrate that the engineered dressings reduce the risk of microbial infection of the burn, since they stop the growth of Staphylococcus aureus. Furthermore, they are able to control and reduce the inflammatory response that is induced in human foreskin fibroblasts by lipopolysaccharides, and in rodents by UVB exposure. In particular, we report a remarkable reduction of pro-inflammatory cytokines when fibroblasts or animals are treated with the alginate-based nanofibers. The down-regulation of cytokines production and the absence of erythema on the skin of the treated animals confirm that the here described dressings are promising as advanced biomedical devices for burn management.
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Affiliation(s)
- Hadi Hajiali
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy.
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Choe C, Lademann J, Darvin ME. Analysis of Human and Porcine Skin in vivo/ex vivo for Penetration of Selected Oils by Confocal Raman Microscopy. Skin Pharmacol Physiol 2015; 28:318-30. [PMID: 26418603 DOI: 10.1159/000439407] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/10/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND The subject of oil penetration into the skin is controversially discussed in the scientific literature. METHODS Confocal Raman microscopy was used for analyzing oil penetration into the skin. The following methods were applied in the study: methods based on tracking specific peaks (method 1), the nonrestricted multiple least square fit (method 2), analyzing the lipid-to-keratin peak ratio using the perpendicular drop-down cutoff procedure (method 3), and the Gaussian function-based deconvolution procedure (method 4). RESULTS The results obtained using methods 1, 2 and 4 show that the investigated oils do not penetrate deeper than 11 µm into human and porcine skin. Petrolatum has a prominent swelling effect on the stratum corneum (32% in vivo, 28% ex vivo), while the other oils exhibit no significant swelling effect. By using method 3, the penetration profile of oils, and especially of petrolatum, into the skin was interpreted incorrectly for various reasons that are addressed herein below. CONCLUSION Predominantly remaining in the uppermost corneocyte layers of the stratum corneum, topically applied oils do not reach the viable cells of the stratum spinosum. To exclude any possible mistakes when using the lipid-keratin Raman peak (2,820-3,030 cm-1), the penetration analysis should be performed using the Gaussian function-based deconvolution procedure.
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Affiliation(s)
- ChunSik Choe
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venereology and Allergology, Charitx00E9; - Universitx00E4;tsmedizin Berlin, Berlin, Germany
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