1,723,124 research outputs found
Turmeric (Curcuma longa L.) products: What quality differences exist?
Full text linkCurcuma longa L. (root and rhizome), commonly known as turmeric, is a plant of high medicinal and economic value globally, including within the EU where it is mainly used as a food and food supplement. Its key active ingredients have been studied extensively, but concerns remain about the composition and thus the quality of extracts and products on the market. Recently, problems of adulteration with other Curcuma species and general poor quality have been detected within crude turmeric powders and final products. This study aimed to investigate the chemical variation of turmeric finished products available in the UK and identify the quality of turmeric products obtained from specific stages of the supply chain, with a focus on quality differences in the UK. 1H-NMR spectroscopy metabolomics coupled to Principle Component Analysis (PCA) and HPTLC methods were used for the phytochemical and metabolomics investigation of 72 turmeric samples, including crude powders, intermediate products from different manufacturing stages and commercial products obtained from health food stores and the Internet. A significant variation in the chemical composition of turmeric finished products, especially in the ones containing turmeric extracts, was found. Several products were found to contain only curcumin or curcuminoids, while the other active ingredients and marker compounds of C. longa were lacking. Products obtained from different stages of the Pukka value chain presented similar chemical composition, with the intermediate products (S57-59) showing the highest amount of active ingredients. Consequently, the manufacturing practices involved in the production of turmeric food supplements are critical stages to obtain high-quality final products. Often the focus has been only on the primary material, its natural variation and forms of production. This study highlights the importance of developing well-controlled integrated systems for the quality assurance of dietary supplements throughout the supply chain from seed to final product
Adsorption and Kinetic Studies Of A Natural Dye from Curcuma longa L., Onto Bamboo Yarn
Full text linkNatural dye extracted from the rhizome of Curcuma longa L. were applied to bamboo yarns using exhaustion dyeing process. This study investigates the dyeing behaviour of Curcumin; the major color component isolated from rhizomes of Curcuma longa L. on bamboo yarn. Langmuir, Freundlich, Tempkin and Dubinin-Radushkevich isotherm models were used to test the adsorption process of curcumin on bamboo yarn. Comparison of regression coefficient value indicated that the Freundlich isotherm most fitted to the adsorption of curcumin onto bamboo yarn. Furthermore, the kinetics study on this research fitted the pseudo-second order model which indicates that the basis of interaction was chemical adsorption
Biological Activities of Curcuma longa L.
No full textMem Inst Oswaldo Cruz 2001, Volume 96, Number 5, pp. 723-728
Biological Activities of Curcuma longa L. CAC Araújo, LL Leon
Code Number: oc01115 ABSTRACT: There are several data in the
literature indicating a great variety of pharmacological activities of
Curcuma longa L. (Zingiberaceae), which exhibit anti-inflammatory,
anti-human immunodeficiency virus, anti-bacteria, antioxidant effects
and nematocidal activities. Curcumin is a major component in Curcuma
longa L., being responsible for its biological actions. Other extracts
of this plant has been showing potency too. In vitro, curcumin exhibits
anti-parasitic, antispasmodic, anti-inflammatory and gastrointestinal
effects; and also inhibits carcinogenesis and cancer growth. In vivo,
there are experiments showing the anti-parasitic, anti-inflammatory
potency of curcumin and extracts of C. longa L. by parenteral and oral
application in animal models. In this present work we make an overview
of the pharmacological activities of C. longa L., showing its
importance. KEYWORDS: Curcuma longa L., curcumin, medicinal plants
Copyright 2001 Mem Inst Oswaldo Cru
Biological Activities of Curcuma longa L.
No full textMem Inst Oswaldo Cruz 2001, Volume 96, Number 5, pp. 723-728
Biological Activities of Curcuma longa L. CAC Araújo, LL Leon
Code Number: oc01115 ABSTRACT: There are several data in the
literature indicating a great variety of pharmacological activities of
Curcuma longa L. (Zingiberaceae), which exhibit anti-inflammatory,
anti-human immunodeficiency virus, anti-bacteria, antioxidant effects
and nematocidal activities. Curcumin is a major component in Curcuma
longa L., being responsible for its biological actions. Other extracts
of this plant has been showing potency too. In vitro, curcumin exhibits
anti-parasitic, antispasmodic, anti-inflammatory and gastrointestinal
effects; and also inhibits carcinogenesis and cancer growth. In vivo,
there are experiments showing the anti-parasitic, anti-inflammatory
potency of curcumin and extracts of C. longa L. by parenteral and oral
application in animal models. In this present work we make an overview
of the pharmacological activities of C. longa L., showing its
importance. KEYWORDS: Curcuma longa L., curcumin, medicinal plants
Copyright 2001 Mem Inst Oswaldo Cru
Biological activities of Curcuma longa L.
No full textThere are several data in the literature indicating a great variety of pharmacological activities of Curcuma longa L. (Zingiberaceae), which exhibit anti-inflammatory, anti-human immunodeficiency virus, anti-bacteria, antioxidant effects and nematocidal activities. Curcumin is a major component in Curcuma longa L., being responsible for its biological actions. Other extracts of this plant has been showing potency too. In vitro, curcumin exhibits anti-parasitic, antispasmodic, anti-inflammatory and gastrointestinal effects; and also inhibits carcinogenesis and cancer growth. In vivo, there are experiments showing the anti-parasitic, anti-inflammatory potency of curcumin and extracts of C. longa L. by parenteral and oral application in animal models. In this present work we make an overview of the pharmacological activities of C. longa L., showing its importance
The impact of affective touch on physiological self-regulation among preschool-age children: The influence of emotional context and effortful control
No full textEmotion Recognition in Preterm and Full-Term School-Age Children
Full text linkChildren born preterm (<37 weeks' gestation) show a specific vulnerability for socio-emotional difficulties, which may lead to an increased likelihood of developing behavioral and psychiatric problems in adolescence and adulthood. The accurate decoding of emotional signals from faces represents a fundamental prerequisite for early social interactions, allowing children to derive information about others' feelings and intentions. The present study aims to explore possible differences between preterm and full-term children in the ability to detect emotional expressions, as well as possible relationships between this ability and socio-emotional skills and problem behaviors during everyday activities. We assessed 55 school-age children (n = 34 preterm and n = 21 full-term) with a cognitive battery that ensured comparable cognitive abilities between the two groups. Moreover, children were asked to identify emotional expressions from pictures of peers' faces (Emotion Recognition Task). Finally, children's emotional, social and behavioral outcomes were assessed with parent-reported questionnaires. The results revealed that preterm children were less accurate than full-term children in detecting positive emotional expressions and they showed poorer social and behavioral outcomes. Notably, correlational analyses showed a relationship between the ability to recognize emotional expressions and socio-emotional functioning. The present study highlights that early difficulties in decoding emotional signals from faces may be critically linked to emotional and behavioral regulation problems, with important implications for the development of social skills and effective interpersonal interactions
Curcuma Longa L. vegetable oil characterization as cutting fluid base and Curcuma Longa L. essential oil antimicrobial properties analysis for machining application
No full textMestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáThe global demand for lubricants is around 40 million tons and about 40% of that production is lost in processes or accidents. This high demand and waste makes it inevitable to consider another possibility of replacing mineral oil-based lubricants with a renewable source. Many techniques are being developed to achieve more sustainable alternatives, so the production of biolubricants from vegetable oils is a promising market due to its biodegradability and large number of sources. This work aims to investigate the vegetable oil of Curcuma Longa L. as a potential lubricant base and the essential oil of Curcuma Longa L. as a potential biocidal additive, both for machining applications. The method proposes to evaluate the physicochemical properties of vegetable oil of Curcuma Longa L. related to the characteristics of the lubricant (viscosity, thermal stability and wettability) and to evaluate the biocidal activity of three commercial essential oils of Curcuma Longa L using minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and disk diffusion. From the results, the vegetable oil Curcuma Longa L. showed high viscosity value, high wettability for 1045 steel and aluminum and good thermal stability, promising characteristics to be used as a lubricant base and only one essential oil showed good biocidal activity against Klebsiella pneumoniae and Staphylococcus aureus, which indicates that different sources can lead to different bactericidal activities. It is concluded that the oils extracted from the Curcuma Longa L. plant have the potential to be used as a biolubricant
Curcuma Longa L. vegetable oil characterization as cutting fluid base and Curcuma Longa L. essential oil antimicrobial properties analysis for machining application
Full text linkMestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáThe global demand for lubricants is around 40 million tons and about 40% of that production is lost in processes or accidents. This high demand and waste makes it inevitable to consider another possibility of replacing mineral oil-based lubricants with a renewable source. Many techniques are being developed to achieve more sustainable alternatives, so the production of biolubricants from vegetable oils is a promising market due to its biodegradability and large number of sources. This work aims to investigate the vegetable oil of Curcuma Longa L. as a potential lubricant base and the essential oil of Curcuma Longa L. as a potential biocidal additive, both for machining applications. The method proposes to evaluate the physicochemical properties of vegetable oil of Curcuma Longa L. related to the characteristics of the lubricant (viscosity, thermal stability and wettability) and to evaluate the biocidal activity of three commercial essential oils of Curcuma Longa L using minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and disk diffusion. From the results, the vegetable oil Curcuma Longa L. showed high viscosity value, high wettability for 1045 steel and aluminum and good thermal stability, promising characteristics to be used as a lubricant base and only one essential oil showed good biocidal activity against Klebsiella pneumoniae and Staphylococcus aureus, which indicates that different sources can lead to different bactericidal activities. It is concluded that the oils extracted from the Curcuma Longa L. plant have the potential to be used as a biolubricant
Utilizzo di Curcuma longa L. in integratori alimentari
No full textutilizzazione di curcuma longa L. come supporto del trattamento di patologie e il suo utilizzo in integratori alimentar
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