Article
Chemistry, Applied
Zijian Liang, Pangzhen Zhang, Yun Xiong, Stuart K. Johnson, Zhongxiang Fang
Summary: This study characterized the phenolic and carotenoid profiles of the Australian native bulb plant, Haemodorum spicatum, using HPLC-DAD-ESI-QTOF-MS/MS and HPLC-DAD. The results identified 40 phenolic compounds and 2 carotenoids, with 35 compounds being reported for the first time in H. spicatum.
Article
Food Science & Technology
Cristina Cebrian-Tarancon, Jose Oliva, Miguel Angel Camara, Gonzalo L. Alonso, M. Rosario Salinas
Summary: This study introduces a method to analyze intact glycosidic aroma precursors in grapes using HPLC-DAD, a simple and inexpensive analytical technique. A total of 20 compounds were selected and identified using HPLC-qTOF-MS. The most abundant group observed were disaccharides hexose pentose and the main aglycones found were monoterpendiols.
Article
Biochemistry & Molecular Biology
Agnese Santanatoglia, Simone Angeloni, Davide Bartolucci, Lauro Fioretti, Gianni Sagratini, Sauro Vittori, Giovanni Caprioli
Summary: The aim of this study was to investigate the parameters affecting the extraction of coffee components in different brewing methods. The main brewing parameters that influenced the final content of these compounds were the volume of water used, brewing ratio, extraction time, and coffee powder particle size. Among the variables studied, total chlorogenic acid content, TFC, TPC, caffeine, and the DPPH assay had the greatest impact on discriminating the different preparation methods.
Article
Biochemistry & Molecular Biology
Ning Tang, Zhengyan Cao, Cheng Yang, Dongsheng Ran, Peiyin Wu, Hongmei Gao, Na He, Guohua Liu, Zexiong Chen
Summary: The R2R3 MYB transcription factor LmMYB15 may play a role in the biosynthesis of chlorogenic acid (CGA) in Lonicera macranthoides, by activating genes like 4CL, MYB3, and MYB4 to increase CGA content. The findings provide a new approach for breeding strategies aiming to enhance CGA content in L. macranthoides, which can significantly improve its mechanical properties.
Article
Chemistry, Applied
Diletta Piatti, Simone Angeloni, Filippo Maggi, Giovanni Caprioli, Massimo Ricciutelli, Lolita Arnoldi, Stefania Bosisio, Giacomo Mombelli, Ettore Drenaggi, Gianni Sagratini
Summary: The polar extracts and essential oils of sea fennel cultivated in central Italy were analyzed. The extracts contained 21 bioactive compounds, with 5-O-caffeoylquinic acid being the most abundant. Melatonin, a hormone that regulates sleep/wake cycle, was identified for the first time in sea fennel extract. The essential oil was mainly composed of monoterpene hydrocarbons and oxygenated monoterpenes. This study highlights the potential use of sea fennel as an edible plant and a source of nutraceutical compounds.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Applied
Christof B. Steingass, Jonas Burkhardt, Vicky Baeumer, Keshav Kumar, Heiko Mibus-Schoppe, Jana Zinkernagel, Patricia Esquivel, Victor M. Jimenez, Ralf Schweiggert
Summary: Anthocyanins were characterized in red cabbage, sweet potato, and Tradescantia pallida leaves. Various non-, mono-, and diacylated cyanidins were identified in red cabbage. Sweet potato leaves contained mono- and diacylated cyanidin- and peonidin glycosides, while T. pallida leaves mainly contained tetra-acylated anthocyanin tradescantin. The thermal stability of red cabbage and purple sweet potato extracts surpassed that of a commercial food dye, but still fell short compared to the stability of Tradescantia extract.
Article
Plant Sciences
Yanchao Chen, Nan Xu, Lihua Du, Jinhao Zhang, Rong Chen, Qianfeng Zhu, Waichin Li, Chuan Wu, Guoping Peng, Liqun Rao, Qiming Wang
Summary: This study investigated the effects of shading treatment on gene expression and chlorogenic acid (CGA) content in Lonicera macranthoides Hand.-Mazz. The results showed that shading treatment significantly decreased the CGA content in LM leaves, increased carotenoid content, and decreased soluble sugar and starch contents. Light provides energy and material for CGA accumulation in LM and affects the expression of CGA accumulation-related genes.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Jana Orsavova, Irena Sytarova, Jiri Mlcek, Ladislava Misurcova
Summary: This study evaluates the impact of climatic conditions on the chemical composition and antioxidant activity of honeysuckle berries in two different areas. The results showed that the chemical composition and antioxidant activity varied depending on the cultivars, locality, and selected methods. Berries from the area with more sunshine had higher levels of certain compounds, while berries from the area with more rain had higher levels of other compounds. The findings can help in selecting the most valuable cultivars for producers and consumers.
Article
Food Science & Technology
William Leonard, Pangzhen Zhang, Danyang Ying, Yun Xiong, Zhongxiang Fang
Summary: This study investigated the effects of extrusion parameters on hempseed oil cake for the first time, showing that extrusion at low moisture and high screw speed significantly increased certain bioactive compounds and enzyme inhibitory activities. Specifically, the study identified 26 phenylpropionamides and observed significant improvements in certain phenolic compound contents after extrusion. The results could have practical applications in the food industry for enhancing the nutritional and commercial value of hempseed oil cake.
JOURNAL OF FOOD SCIENCE
(2021)
Article
Plant Sciences
Soraia I. Pedro, Tiago A. Fernandes, Angelo Luis, Alexandra M. M. Antunes, Jose C. Goncalves, Jorge Gominho, Eugenia Gallardo, Ofelia Anjos
Summary: This study evaluated the potential industrial applications of various Acacia species by examining their chemical composition, antioxidant, and antimicrobial properties. Among the studied species, A. pycnantha exhibited a higher concentration of total phenolic compounds and displayed notable antibacterial activity. Vibrational spectroscopy was a reliable method for distinguishing between species.
Article
Pharmacology & Pharmacy
Malgorzata Kozyra, Anna Biernasiuk, Magdalena Wiktor, Wirginia Kukula-Koch, Anna Malm
Summary: A comparative analysis was conducted on the flavonoids and phenolic acids composition in six species of Monarda from the Lamiaceae family. The results showed that these plants exhibited potential antioxidant and antimicrobial effects, making them potential sources of natural antioxidants and antimicrobial agents.
Article
Pharmacology & Pharmacy
Enass Y. A. Salih, Riitta Julkunen-Tiitto, Olavi Luukkanen, Pia Fyhrqvist
Summary: The present study aimed to verify the traditional use of Terminalia brownii in Sudanese medicine against fungal infections. The results showed that extracts of T. brownii have significant anti-Candida activity. Sixty compounds were identified, including several tannins and other chemical compounds. This is the first report of the presence of these compounds in T. brownii.
Article
Engineering, Multidisciplinary
Daria Smigiel-Kaminska, Jan Pospiech, Piotr Stepnowski, Jolanta Was-Gubala, Jolanta Kumirska
Summary: Polyester fibers are widely used and often assessed as evidence in forensic labs, dyed with common disperse dyes. This study developed and validated methods for identifying the dyes used on polyester fibers, showing three types of coloring and optimal extraction procedures using chlorobenzene at high temperature. Validation data confirmed the effectiveness of these proposed methods for such analyses.
Article
Biochemistry & Molecular Biology
Yossri Grojja, Hafedh Hajlaoui, Simon Vlad Luca, Jouda Abidi, Krystyna Skalicka-Wozniak, Sami Zouari, Mohamed Bouaziz
Summary: This study characterized the bioactive compounds in the seed extract of Capsicum annuum L. and evaluated its antimicrobial and antioxidant activities. The extract was found to contain various phytochemical classes, including phenolic compounds and flavonoids. The phenolic and flavonoid content correlated with the extract's high antiradical, reducing power, and chelating power activities. The extract also exhibited significant antimicrobial activity against both bacteria and fungi.
Article
Chemistry, Applied
William Leonard, Pangzhen Zhang, Danyang Ying, Yun Xiong, Zhongxiang Fang
Summary: Extrusion of hempseed hull at different barrel temperature and screw speed led to increased total phenolic content, antioxidant activities, and inhibition of α-glucosidase and acetylcholinesterase. Interaction between extrusion parameters influenced the phenolic/flavonoid content, antioxidant activities, and enzyme inhibition. Various phenylpropionamides were identified, with N-trans-caffeoyltyramine showing significant positive correlation with biological activities.