Results 91 to 100 of about 1,913,440 (221)

Otimização e aplicação da microextração em fase sólida com e sem refrigeração interna em amostras de ervas medicinais e água de rio [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Quimica, Florianópolis, 2013A microextração em fase sólida no modo de extração headspace (HS-SPME) e a microextração ...
Merib, Josias de Oliveira
core  

Detecting Chestnut Ink Diseases Through the Dog's Sense of Smell: From Laboratory to Forest

Plant Pathology, Volume 75, Issue 5, September‐October 2026.
Canine olfactory abilities were used to distinguish chestnut ink disease caused by Phytophthora spp. A trained detection dog, conditioned with polymer tubes carrying pathogen‐derived volatile organic compounds (VOCs), first detected Phytophthora‐infected roots under controlled conditions and then in chestnut orchards, demonstrating a non‐invasive ...
Francesca Carloni, Carlo Bregant, Davide Marinelli, Benedetta Fanesi, Lama Ismaiel, Paolo Lucci, Fabio Gennaretti, Benedetto T. Linaldeddu, Sergio Murolo   +8 more
wiley   +1 more source

Pre-harvest UV irradiation differentially modulates terpenoids and esters in tarragon (Artemisia dracunculus L.) for enhanced essential oil quality

Frontiers in Plant Science
Tarragon (Artemisia dracunculus L.) is an aromatic herb of industrial significance, valued for its essential oil composition that determines its applications in the flavor, fragrance, and cosmetic industries.
Chunjing Hou, Chunjing Hou, Haitao Meng, Haitao Meng, Jialu Yang, Jialu Yang, Yiming Sun, Yiming Sun   +7 more
doaj   +1 more source

Comparative Volatile Profiling Reveals the Chemical Association of Huangshui with Fermented Grains, Pit Mud, and Nongxiangxing Baijiu

Foods
Huangshui (HS), fermented grains (FG), and pit mud (PM) are closely connected during the fermentation of Nongxiangxing baijiu (NXB); however, the contribution of HS to the differences in flavor profiles across PM, FG, and distilled baijiu has not been ...
Wei Cheng, Na Li, Qingyun Zhu, Gengdian Liu, Xiaoyun Hao, Chao Jiang, Lele Zhang, Xianfeng Du   +7 more
doaj   +1 more source

Desenvolvimento, otimização e validação de metodologias analíticas (HS-GC-FID, S-GC-MS EHS-SPME-GC-MS) para determinação de BTEX em matrizes aquosas ambientais.

, 2009
A presença de benzeno, tolueno, etilbenzeno e xilenos (BTEX) em água potável, devido à toxicidade, só é permitida em baixa concentração (5µg/L para benzeno).
Heleno, Fernanda Fernandes
core   +2 more sources

Quantitative Profiling of Ester Compounds Using HS-SPME-GC-MS and Chemometrics for Assessing Volatile Markers of the Second Fermentation in Bottle

, 2017
A quantitative approach using HS-SPME-GC-MS was performed to investigate the ester changes related to the second fermentation in bottle. The contribution of the type of base wine to the final wine style is detailed.
Juan Manuel León (3860059), Francisco Julián Cuevas (3860062), José Manuel Muñoz-Redondo (3860056), María José Ruiz-Moreno (3860050), José Manuel Moreno-Rojas (1685935), Pilar Ramírez (3860053)   +5 more
core   +1 more source

Characterization of volatile compounds of Daucus crinitus Desf. Headspace Solid Phase Microextraction as alternative technique to Hydrodistillation

Chemistry Central Journal, 2010
Background Traditionally, the essential oil of aromatic herbs is obtained using hydrodistillation (HD). Because the emitted volatile fraction plays a fundamental role in a plant's life, various novel techniques have been developed for its extraction from
Tabti Boufeldja, Allali Houcine, Desjobert Jean-Marie, Djabou Nassim, El Amine Dib Mohammed, Muselli Alain, Costa Jean   +6 more
doaj   +1 more source

Analysis of Volatile Hydrocarbons (Pentene Dimers and Terpenes) in Extra Virgin Olive Oil: Optimization by Response Surface Methodology and Validation of HS-SPME-GC-MS Method

A head space-solid phase microextraction-gas chromatography–mass spectrometery (HS-SPME-GC-MS) method for the simultaneous analysis of pentene dimers from lipoxygenase (LOX) pathway, monoterpenes, and sesquiterpenes in extra virgin olive oil (EVOO) was ...
Stefano Catola (17838303), Serena Orlandini (17838297), Nadia Mulinacci (1679377), Sandra Furlanetto (17838306), Elisa Giambanelli (2149345), Diletta Balli (17838300), Lorenzo Cecchi (496272), Bruno Zanoni (10707712), Marzia Migliorini (1679374)   +8 more
core   +1 more source

Volatile Fingerprinting and Interpretable Machine Learning for Quality Differentiation of Astragali Radix from Different Cultivation Patterns

Foods
Volatile fingerprints provide useful information for characterizing Astragali Radix (AR), a food–medicine homologous plant material, but differences among wild, wild-simulated, and cultivated samples remain unclear.
Shulin Yu, Ziyue Song, Yunqi Sun, Wanying Li, Jiayi Dong, Huiqin Zou, Yonghong Yan   +6 more
doaj   +1 more source

Floral aroma improvement via solar withering and shaking in summer green tea: Sensory and analytical insights

Food Chemistry: X
Summer green tea leaves often exhibit excessive astringency, weak aroma and poor sensory quality, leading to low consumer acceptance, resource waste, and economic losses, which contradict sustainable development.
Jiarui Zeng, Sijia Lv, Rou Zeng, Jiayuan Lin, Jie Jiang, Qiang Shen, Yuanchun Ma, Wanping Fang, Jingjing Tian, Xujun Zhu   +9 more
doaj   +1 more source