Raw Extraction Research Articles

Comparison of Embodied Carbon Footprint of a Mass Timber Building Structure with a Steel Equivalent

The main purpose of this study is to quantify and compare the embodied carbon (EC) from the materials used or designed to build the Adohi Hall, a residence building located on the University of Arkansas campus in Fayetteville, AR. It has been constructed as a mass timber structure. It is compared to the same building design with a steel frame for this study. Based on the defined goal and scope of the project, all materials used in the building structure are compared for their global warming potential (GWP) impact by applying a life cycle assessment (LCA) using a cradle-to-construction site system boundary. This comparative building LCA comprises the product stage (including raw material extraction, processing, transporting, and manufacturing) plus transportation to the construction site (nodule A1–A4, according to standard EN 15804 definitions). In this study, GWP is primarily assessed with the exclusion of other environmental factors. Tally®, as one of the most popular LCA tools for buildings, is used in this comparative LCA analysis. In this study, the substitution of mass timber for a steel structure with a corrugated steel deck and concrete topping offers a promising opportunity to understand the GWP impact of each structure. Mass timber structures exhibit superior environmental attributes considering the carbon dioxide equivalent (CO2 eq). Emissions per square meter of gross floor area for mass timber stand at 198 kg, in stark contrast to the 243 kg CO2 eq recorded for steel structures. This means the mass timber building achieved a 19% reduction in carbon emissions compared to the functional equivalent steel structure within the building modules A1 to A4 studied. When considering carbon storage, about 2757 tonnes of CO2 eq are stored in the mass timber building, presenting further benefits of carbon emission delays for the life span of the structure. The substitution benefit from this construction case was studied through the displacement factor (DF) quantification following the standard process. A 0.28 DF was obtained when using mass timber over steel in the structure. This study provides insights into making more environmentally efficient decisions in buildings and helps in the move forward to reduce greenhouse gas (GHG) emissions and address GWP mitigation.

Chemical Composition and Antibacterial Activity of Volatile Compounds Genista carinalis Plant

Essential oils play a significant role in the plant chemistry. Natural products have been widely used in antiviral, antibacterial, antiparasitic, antifungal, insecticidal, medicinal and cosmetic applications since the Middle Age. Our aim in this study was to investigate the volatile components of the Genista carinalis Griseb. (Fabaceae) plant grown in the Trakya region by GC-MS method and to determine the antibacterial activity of the raw extracts. Volatile components of n-hexane extract from the plant G. carinalis were investigated using the GC-MS method. As a result of our research on the volatile components of G. carinalis, fifty-two bioactive components were identified. The ethyl acetate extract of G. carinalis was the most effective on both Gram-positive and Gram-negative bacteria tested, with higher antibacterial activity against Gram positive bacteria.

Life cycle assessment of lead‐free potassium sodium niobate versus lead zirconate titanate: Energy and environmental impacts

AbstractOver the years, lead‐based piezoelectric ceramics found extensive use in vital fields such as sensors and actuators. Despite their exceptional electromechanical properties, lead‐containing materials pose severe environmental risks and foster a new era of lead‐free piezoelectric materials after decades of research. However, recent comparative assessments of potassium sodium niobate (KNN) versus lead zirconate titanate (PZT) piezoelectric materials proposed that the environmental damage already presented before use due to raw material extraction and processing, invoking concerns on the true greenness of the lead‐free alternatives. Nevertheless, many other factors deserve further consideration, for example, reference geometry and life cycle stage. Herein, the comprehensive life cycle assessment is undertaken on PZT and KNN‐based ceramics with a unit volume of 0.001 m3 from cradle to gate. Results show that PZT exhibits higher negative impacts than KNN‐based counterparts, attributed to lead extraction, processing, and associated environmental emissions. Across primary quantitative impact indicators from toxicity, environmental, and resource aspects, KNN‐based ceramics impose fewer risks on the environment and human health, with the overall impact being only 28% of PZT ceramics. Still, more efficient methods are required for KNN‐based ceramics to reduce the high energy consumption and emission during extraction and purification of raw material Nb2O5. This work not only offers critical insights for material development but also serves as a multifaceted reference for advanced fabrication technologies.image

Enrichment and Evaluation of Antitumor Properties of Total Flavonoids from Juglans mandshurica Maxim.

Flavonoids are important secondary metabolites found in Juglans mandshurica Maxim., which is a precious reservoir of bioactive substances in China. To explore the antitumor actions of flavonoids (JMFs) from the waste branches of J. mandshurica, the following optimized purification parameters of JMFs by macroporous resins were first obtained. The loading concentration, flow rate, and loading volume of raw flavonoid extracts were 1.4 mg/mL, 2.4 BV/h, and 5 BV, respectively, and for desorption, 60% ethanol (4 BV) was selected to elute JMFs-loaded AB-8 resin at a flow rate of 2.4 BV/h. This adsorption behavior can be explained by the pseudo-second-order kinetic model and Langmuir isotherm model. Subsequently, JMFs were identified using Fourier transform infrared combined with high-performance liquid chromatography and tandem mass spectrometry, and a total of 156 flavonoids were identified. Furthermore, the inhibitory potential of JMFs on the proliferation, migration, and invasion of HepG2 cells was demonstrated. The results also show that exposure to JMFs induced apoptotic cell death, which might be associated with extrinsic and intrinsic pathways. Additionally, flow cytometry detection found that JMFs exposure triggered S phase arrest and the generation of reactive oxygen species in HepG2 cells. These findings suggest that the JMFs purified in this study represent great potential for the treatment of liver cancer.

OPTIMAL CONDITIONS FOR EXTRACTING HIGH-QUALITY PECTIN FROM WATER HYACINTH (Eichhornia crassipes) FOR LESS SOLUBLE HYDROGEL PRODUCTION

The research aimed to extract high-quality pectin from water hyacinth for less soluble hydrogel production. The product adds value to water hyacinth waste and helps solve environmental problems. The high degree of esterification pectin can be prepared as a hydrogel, which can be used in various pollution treatment applications. The quality of pectin depended on raw materials and extraction conditions. The optimum condition was initially predicted using the response surface method (RSM). Three extraction variables were studied, including pH 1.0-4.0, temperature 50-110ºC, and extraction time 30-240 min. A total of seventeen runs including five replicate runs were studied. Functional groups of pectin were studied using Fourier Transform Infrared spectrophotometry. The degree of esterification and emulsifying properties were determined for assessing the quality of extracted pectin. The result revealed that the extraction conditions strongly affected both the yield and the quality. The condition of pH 2.5, 110ºC, and 30 minutes had the highest degree of esterification of 94.13 % but low yield (1.42%). On the other hand, under the conditions of pH 1.0, 110ºC, and 135 min extract time had the highest yield of 3.85% (about 76.6% of pectin content) however the degree of esterification is low at 43.25 %. Two mathematical models were proposed for yield and number of ester groups. The result will be used for the selection of high-quality pectin to produce insoluble hydrogel for pollution treatment in the future.

Life Cycle Assessment of Plasterboard Production: A UK Case Study

Plasterboard, which serves as a nonstructural building material, is widely employed for lightweight wall construction and surface finishing in walls and ceilings. Amid mounting concerns regarding product sustainability and the adoption of Net Zero strategies, evaluating the environmental performance of materials has become crucial. This study aims to conduct a comprehensive life cycle assessment (LCA) for wall gypsum plasterboard, aiming to pinpoint areas for potential environmental improvement. The LCA methodology, adhering to established guidelines and considering midpoint impact categories, was employed to quantify environmental impacts across various stages of the plasterboard life cycle—encompassing raw material extraction, plasterboard manufacturing, transportation during all stages, and end-of-life treatment of plasterboard waste. Primary data were sourced directly from a plasterboard manufacturer and recycler and supplemented with secondary data obtained from the Environmental Product Declaration (EPD) and the Ecoinvent 3.9 database. Among the identified impact categories, the human carcinogenic toxicity category emerged as the most affected category, primarily due to the raw material supply stage, followed by freshwater ecotoxicity, which was impacted due to the material supply stage.

Advancements in Expanded Clay Manufacturing Using "Clay-Desert Sand-Oil Sludge" Sludge Composite Materials

This study explores the development of resource-saving expanded clay technology utilizing underutilized clay raw materials and oil extraction waste. Traditional expanded clay production is energy-intensive and often employs high-quality clay; however, our research identifies technological modes and parameters for producing expanded clay through plastic molding, incorporating substandard raw materials and oil sludge. This method eliminates the need for costly energy-releasing additives and reduces energy costs associated with drying and firing by 25-30%. The research aims to demonstrate the feasibility of this novel production technique in the Republic of Kazakhstan, considering the local availability of raw materials, energy resources, and regional demand for thermal insulation materials in industrial and civil construction. Our findings suggest that integrating 'Desert Sand-Oil Sludge' into the batch composition can effectively produce granulated porous thermal insulation material, aligning with the region's development strategy and offering significant economic and environmental benefits.
 Highlights:
 
 Resource Utilization: Uses oil waste and substandard clay to produce expanded clay, reducing reliance on high-quality materials.
 Energy Savings: Cuts energy costs for production by 25-30% through innovative processing.
 Regional Benefit: Aligns with Kazakhstan's strategy by utilizing local resources and supporting construction needs.
 
 Keywords: Expanded Clay, Oil Sludge, Desert Sand

Evaluation of bacteriostatic and antioxidant activities of various extracts from aerial part of Piper nigrum grown in Gulf countries traditionally used for the treatment of various infectious diseases

AbstractPiper nigrum (P. nigrum) is a tropical medicinal plant widely available in Southeast Asian countries including Oman. In Asian It has a long history of usage in places such as Oman for treating of rheumatism, colds, and various infections. Based on the medicinal uses, the purpose of this research is to create diverse fractions using increasing solvent polarity from the aerial part of the collected plant species and evaluate their antibacterial and antioxidant activities by using established bioassays. The aerial part was collected from the Southern part of Oman and processed using the standard method. The processed materials were recovered using the maceration method using methanol, and the methanol raw extracts was further fractionated with water extraction, butanol, ethyl acetate (ETA), hexane, and dichloromethane are produced using different liquid polarities. Each of the six plant extracts was tested for antioxidant and antibacterial potential at different concentrations against DPPH (1, 1-diphenyl-2-picrylhydrazyl) and agar diffusion methods. All of the fractions at varied concentrations shown promising antioxidant activity with DPPH against the gallic acid. The maximum activity was observed in hexane extract, while the smallest potential was noticed in butanol extract, in the following order: hexane > chloroform > water > methanol > ethyl acetate > butanol extract. The antibacterial efficacy of six different polarities extracts gives moderate activity against two Gram-positive bacteria strains namely S. saprophyticus and S. aureus and three Gram-negative namely P. vulgaris, K. senegalensis and E. coli. Among the six extracts, hexane extract had the most antibacterial activity, whereas butanol extract had the smallest activity. The remaining four extracts, chloroform, ethyl acetate, methanol, and water, all had comparable activity. In conclusion, the extracts with the greatest activity from the chosen plant types might be employed as natural antioxidants to treat infectious disorders.

Assessing the decarbonization roadmap of a RoPax ferry

AbstractThe reduction of emissions from shipping is necessary to combat climate change. One viable option is to change the fuels utilized. In this study, we investigate the environmental and economic performance of marine diesel oil (MDO), liquified natural gas (LNG), liquified biogas (LBG), and a mixture of LNG and LBG. We study a real case of a roll-on/roll-off passenger ship (RoPax) in Finland. Life cycle thinking is applied to assess the environmental impact, covering emissions from well to propeller (raw material extraction, fuel production, transportation, storage, and combustion), while the economic implications are estimated through future fuel prices and carbon pricing from 2023 to 2050. The carbon pricing covers different carbon tax schemes, namely stated policies scenario (STEPS), sustainable development scenarios (SDS), and net-zero emissions (NZE). STEPS reflects the existing measures and policies under development; SDS pursues to meet the goal of Paris Agreement, while NZE aims to reach net zero. Adopting LNG would improve carbon dioxide emissions, but the overall climate change impact was not significantly lower than MDO. It is also found that the biggest environmental improvement can be obtained by switching to LBG, although future availability can be an issue. The economic assessment shows that LBG has the highest fuel price uncertainties, although its carbon cost will be the lowest. Alternatively, using LNG & LBG mixture can serve as a transition path to contain climate change while dealing with its price uncertainty and availability.

Unveiling the Antioxidant, Cytotoxic, and Anti-Inflammatory Activities and Chemical Compositional Information of an Invasive Plant: Lycium ferocissimum Miers.

In this study, the antioxidant (DPPH and ABTS radical-scavenging, ferric-reducing, iron (II)-chelating), anti-inflammatory (LPS-induced Raw 264.7 cell line), and cytotoxic activities (Du145 and A549 cell lines) of raw fruit, ripe fruit and leaves of the Lycium ferocissimum species were examined. By using high-pressure liquid chromatography, p-OH benzoic acid, caffeic acid, and rutin were detected in the ethanol and water extracts. For the most active raw fruit ethanol extract, the IC50 in terms of the DPPH-scavenging activity was 0.57 mg/mL, and the ABTS inhibition percentage was 88.73% at a 3 mg/mL concentration. The raw fruit ethanol extract exhibited significant inhibition of viability in the Du145 cell line in the concentration range of 62.5-1000 µg/mL. Additionally, the extract effectively reduced the LPS-induced inflammation parameters (TNF-α, IFN-γ, PGE 2, and NO) at a concentration of 31.25 µg/mL. The biological activities of L. ferocissimum, which have been elucidated for the first time, have yielded promising results.

Quality control methods for fruit extracts of Kigelia africana using high performance thin layer chromatography

Kigelia africana is a tree native to Africa but also found in eastern and southern parts of India with reported anti-bacterial, anti-inflammatory, and immunomodulatory activities. Verbascoside, caffeic acid and ferulic acid are important markers for the quality control of the plant. Two different HPTLC methods were developed and validated; method − 1 for estimation of verbascoside and caffeic acid while method − 2 for estimation of caffeic acid and ferulic acid. Developed methods were applied to the methanolic fruit extract to determine the quantities of markers. Both methods were found to be linear, specific, precise, accurate, sensitive and robust. Results indicated that both methods can be used for quantitative determination of verbascoside, caffeic acid and ferulic acid in fruit extract. The developed methods may be utilised as a part of the quality control and standardisation for the raw material and extracts of Kigelia africana and can also aid to chromatographic fingerprinting of the plant.

Introduction of ERAC (Environmental Risk Assessment and Control) Frame Work in Manufacturing to Enhance Sustainability

This paper introduces the Environmental Risk Assessment and Control (ERAC) framework as a comprehensive approach to managing environmental impacts throughout the lifecycle of product manufacturing processes. Drawing from a detailed case study conducted at a fiber cement manufacturing plant in Odisha, India, the study identifies environmental risks across various phases including raw material extraction, manufacturing processes, and product disposal. ERAC involves five key components: identification of environmental risks, rigorous risk assessment using tools such as environmental modeling and life cycle assessment, formulation of tailored control measures, implementation with robust monitoring, and continuous improvement. The case study demonstrates significant improvements in environmental performance indicators post-implementation, highlighting reductions in specific PM emissions, carbon footprint, waste generation, and energy consumption, as well as enhancements in productivity and workplace safety. The findings underscore ERAC's effectiveness in promoting sustainable manufacturing practices and environmental stewardship.

How do research participants with age-related vision loss talk about their experiences? A secondary discourse analysis of published qualitative extracts

Abstract Age-related macular degeneration (AMD) is a chronic, progressive eye condition that can affect individuals in later life and lead to loss of central visual function. In this analysis, we aimed to explore the discursive landscape of talk about AMD, drawing on extracts published in peer-reviewed qualitative studies on AMD. Drawing on procedures of qualitative meta-synthesis, we compiled a corpus of raw data extracts from 25 qualitative studies on AMD published in English, largely carried out in high-income countries. Extracts were analysed to identify dominant discourses and key interpretative repertoires (such as recurring metaphors, tropes and figures of speech). We adopted a Foucauldian discourse analytic approach, to consider the implications of dominant discourses, and their associated subject positions, for the subjective experience of living with AMD. Our analysis identified five distinct ways in which AMD was constructed in research participants' talk about experiences of AMD. They included: AMD as a mysterious affliction, linked to biological ageing; AMD as a total loss of independence; AMD as grievous loss; AMD as a condition to be stoically accepted; and – to a more limited extent – AMD as an opportunity for discovery. Drawing on theory from critical disability studies and gerontology, we suggest that the constructions identified are underpinned by broader societal discourses which construct ageing and disability in largely negative, medicalised and individualistic terms. Taking up subject positions within such discourses may compound feelings of isolation, hopelessness and powerlessness. We suggest there may be value in exploring talk about experiences of living with AMD within a broader range of everyday social, relational and environmental contexts.

Carbon footprint assessment of maintenance and rehabilitation techniques for sewer systems

ABSTRACT The research study presented in this paper sets out to improve our understanding of the environmental impacts associated with the maintenance and rehabilitation of conventional gravity sewer systems and, through this, support decision-making processes in sewer system management. The objects assessed are open trench replacement, trenchless renovation, open trench and trenchless spot repair, inspection, and hydraulic cleaning of sewer pipes. Carbon footprint assessment was carried out according to the ISO14067:2018 standard. The life cycle stages considered included raw material extraction, manufacturing processes, maintenance/rehabilitation, and the transportation of materials. The functional unit was defined as: ‘A gravity sewer section with a length of 45 metres and a diameter of 200 to 1500 mm operating in normal conditions over a period of 100 years in the Netherlands’. A sensitivity analysis was included to assess how the results vary as a consequence of changes in the input dimensions. The findings of this study suggest that the main opportunities for reducing the environmental impacts of conventional, open trench pipe replacement lie in the choice of the pipe material and the design of the asphalt pavement that requires reinstatement. Adopting trenchless sewer rehabilitation technologies can significantly reduce the environmental burdens of sewer system rehabilitation.

Utilisation of Reused Steel and Slag: Analysing the Circular Economy Benefits through Three Case Studies

This research explores sustainable construction practices focusing on material reuse, specifically reclaimed structural steel and slag. In general, the building stock is not designed for deconstruction, and material recovery for reuse at the end of life of buildings is complex and challenging. The study evaluates the benefits of content reuse through a thorough analysis of three case studies—BedZED eco-friendly housing, Angus Technopôle building, and the use of steel slag aggregate in road construction. It highlights the value of reclaimed structural steel and by-products like steel slag in waste reduction, energy conservation, and resource preservation. The BedZED case study showcases recycled steel’s cost-effectiveness and economic viability in construction, while the Angus Technopôle building exemplifies the adaptive reuse of an old steel frame building. Additionally, the third case study showcases the benefits of using Electric Arc Furnace C slag in asphalt-wearing courses, highlighting the reduction in greenhouse gas emissions and environmental impact. The versatility of reclaimed structural steel and slag is evident in integrating material reuse in building construction and road infrastructure. These case studies illustrate the potential for reusing steel and its by-products in various construction contexts, from eco-friendly housing to road development. Therefore, the study aims to demonstrate the feasibility and benefits of sustainable practices within the construction industry by showcasing the successful incorporation of reclaimed steel and slag in these projects. Considering the significant contributions of building construction to global greenhouse gas emissions, raw material extraction, and waste production, the study advocates for adopting circular economy (CE) principles within the construction industry. Finally, the analysis of case studies underscores the advantages of reclaimed structural steel and the valorisation of steel slag through the lens of CE and their contribution to sustainable development.

Dyslipidemic effect of aqueous and ethanolic extracts of raw and roasted xoconostle (Opuntia joconostle) peel

The aim of the present study was to assess the impacts of roasting and the type of extraction solvent (ethanol or water) on the hypolipidemic activity of xoconostle fruit peel extracts in a tyloxapol-induced model of hyperlipidemia. Water and ethanol extracts from raw and roasted Opuntia joconostle peels were obtained to quantify the phytochemicals contained within and assess their hypolipidemic activity in rats (n=5) against tyloxapol-induced dyslipidemia (400 mg/kg). The raw ethanol and water extracts, as well as the roasted water extract (200 mg/kg), showed hypolipidemic activity in the tyloxapol-treated group (p<0.05). In contrast, the roasted sample extracted with ethanol did not show this effect. The concentrations of phenolic compounds (39.80 mg GAE/g) and flavonoids (16.42 ±0.14 mg QE/g) were higher in the ethanolic extracts than in the aqueous extracts. Conversely, the concentration of betalains (115.51 ±1.66 mg/100 g) was higher in the water extracts than in the ethanol extracts. It was concluded that the roasting process modified the concentration of some phytochemicals and their antioxidant capacity in vitro, producing a hypolipidemic effect in tyloxapol-induced hyperlipidemic rats.

Effect of Morinda citrifolia (Noni) Fruit Extract on the Teratogenecity in Female Wistar Rats

The raw fruit extract of Morinda citrifolia plant and its commercially available formulation in the market as Noni max (Best-selling brand of Brihans pharmaceutical in India and abroad) were obtained from Brihans Pharmaceuticals Pvt. Ltd. Mulund, Mumbai, India. 80 Wistar rats of either sex weighing between 200 to 250 gms were used for experimentation. In the present study, it was found that the Morinda citrifolia fruit extract and its formulation found safe for the developmental stages of foetus. It was also found that there was no significant difference was noted in body weight and the relative weight of the ovary, uterus and placenta of female rat. There was no structural and functional manifestation was noted in the developing foetusin the pregnant female rats. From the present study it is confirm that, both Morinda citrifolia fruit extract and its formulation (Noni max) did not produce any teratogenic effect in rats up to 1000 mg/kg and 40 ml/kg respectively.

Optimization of a fast and sensitive method based on matrix solid-phase dispersion-LC-ms/ms for simultaneous determination of phthalates and bisphenols in mussel samples

Bisphenols and phthalates are wide classes of endocrine disrupting chemicals (EDCs) extensively used as additives in plastic products. In this study, a fast and reliable analytical method based on matrix solid-phase dispersion (MSPD) coupled with LC-MS/MS was developed and optimized for simultaneous determination of 8 bisphenols and 7 phthalates in raw mussel extract. The LC-MS/MS method was tested for linearity (R2), inter- and intra-day repeatability, limit of detection and quantification, both for matrix-free and matrix-matched solutions. The MSPD method was optimized in terms of ratio between sample and sorbent, and the type and quantity of the eluents in order to maximize the recoveries and to minimize matrix effects. The obtained recoveries (values between 75% and 113%), limits of detection (values between 0.048 and 0.36 µg kg−1), limits of quantification (values between 0.16 and 1.28 µg kg−1), repeatability (RSD% between 1.30% and 8.41%) and linearity (R2 > 0.998) were satisfactory and suitable for the determination of target micropollutants in food samples. In addition, the low solvent consumption and fast execution make this method ideal for routinely determinations of bisphenols and phthalates in mussels.

Algae Extracts in Horticulture: Characterization of Algae-Based Extracts and Impact on Turnip Germination and Radish Culture

Algae are rich in nutrients and bioactive compounds, playing a crucial role as biostimulants for plants, enhancing growth and resilience. Four algae-based extracts were tested: the raw extract of red macroalgae Calliblepharis jubata (CJ), Ulasco (UA), Grasco (GR) and “AgriAlgae Foliar” (AA), the latter with microalgae. The extracts were evaluated for their physicochemical parameters (pH, electrical conductivity and solids), macro and microelements, phenolic compounds and antioxidants. Afterwards, seed germination trials were carried out with turnip seeds (Brassica rapa var. cymosa L.), and pot trials were carried out with Cherry Belle (Flora Lusitana, Cantanhede, Portugal) radish plants (Raphanus sativus L.), to verify the biostimulant potential of the extracts in horticulture. In the pot trials, all the treatments led to better yields and nutritional quality. The UA 0.12 extract influenced the heaviest roots (40.32 ± 11.89 g), on average, and the GR 0.10 extract in roots with the highest percentage of proteins (1.866 ± 0.004% dm), phenolic compounds (0.12121 mg eq. gallic acid/g fm) and antioxidants (0.0754 ± 0.0000 mg eq. ascorbic acid/g fm). The radishes treated with the AA 0.003 extract showed the greatest uniformity, the healthiest leaves, with the highest flavonoid content and the heaviest aerial part (19.52 ± 5.99 g). All the extract treatments resulted in a visible mitigation of abiotic stress and consequently better results, showing that these can be crucial for sustainable agriculture.

Feasibility of excitation-emission fluorescence spectroscopy in tandem with chemometrics for quantitation of trans-resveratrol in vine-shoot ethanolic extracts.

trans-Resveratrol (TR) is a well-known phytochemical compound with important biological properties. It can be recovered from agri-food by-products or wastes, such as vine shoots. Once recovered, its concentration should be measured, possibly in a green, non-destructive, and efficient manner. With these premises, this work aimed to explore the feasibility of excitation-emission fluorescence spectroscopy combined with chemometrics for the analysis of TR in raw extracts obtained from vine shoots. A total of 75 extracts were produced and analyzed by ultra-performance liquid chromatography method with diode array detection (UPLC-DAD) and spectrofluorimetry. Then, the feasibility of two calibration strategies for TR quantitation was assessed - a parallel factor analysis (PARAFAC)-based calibration and the N-way partial least squares (NPLS) regression. The extracts showed variable TR content, the excitation/emission maxima of which were at around 305/390 nm, respectively. The best PARAFAC-based calibration allowed a root mean square error of prediction (RMSEP) of 22.57 mg L-1 , and a relative prediction deviation (RPD) of 2.91 to be obtained but a large number of PARAFAC components should be considered to improve the predictions. The results of the NPLS regression were slightly better, with a RMSEP of 19.47 mg L-1 , and an RPD of 3.33 in the best case. Fluorescence could be an alternative analytical technique to measure TR in complex samples. Chemometric tools allowed the identification of the TR signal in the fluorescence landscapes, which could be further used for its non-destructive quantitation. The need for a more accurate criterion for optimal PARAFAC complexity emerged. © 2024 Society of Chemical Industry.