Read by QxMD icon Read

Aristotelia chilensis

Jorge González-Villagra, Jerry D Cohen, Marjorie M Reyes-Díaz
Abscisic acid (ABA) regulates the physiological and biochemical mechanisms required to tolerate drought stress, which is considered as an important abiotic stress. It has been postulated that ABA might be involved in regulation of plant phenolic compounds biosynthesis, especially anthocyanins that accumulate in plants subjected to drought stress; however, the evidence for this postulate remains elusive. Therefore, we studied whether ABA is involved in phenolic compounds accumulation, especially anthocyanin biosynthesis, using drought stressed Aristotelia chilensis plants, an endemic berry in Chile...
June 20, 2018: Physiologia Plantarum
Carolina Fredes, Camila Becerra, Javier Parada, Paz Robert
The microencapsulation of maqui juice by spray-drying and freeze-drying was studied as a strategy to protect anthocyanins in new food formulations in order to improve the anthocyanin retention before consumption and the bioaccessibility. It is well known that the encapsulation method affects both the shape and size of powders, being assumed that undefined forms of freeze-drying powders might affect their stability due to the high permeability to oxygen. The objective of this study was to compare the microencapsulation of maqui juice by spray-drying and freeze-drying, evaluating the stability of specific anthocyanins in yogurt and after in vitro digestion...
May 20, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Flávia Alvim Sant'Anna Addor, Juliana Cotta Vieira, Camila Sirieiro Abreu Melo
Purpose: Skin aging is a progressive and degenerative process caused by a decrease in the physiological functions of the skin tissue. In addition, environmental factors as well as concomitant diseases and lifestyle (nutrition, sedentary lifestyle, smoking, etc) negatively impact the aging process. An association between oral administration of collagen peptides combined with vitamin C and extracts of Hibiscus sabdariffa and Aristotelia chilensis (Delphynol® ) (Eximia Firmalize Age complex® ) on dermal thickness was studied and the improvement in aging signs was evaluated...
2018: Clinical, Cosmetic and Investigational Dermatology
Issis Quispe-Fuentes, Antonio Vega-Gálvez, Mario Aranda
BACKGROUND: Five drying methods (freeze, convective, sun, infrared, and vacuum drying) were applied to maqui berries to establish their effect on phenolic compounds and antioxidant capacity. Total phenolic, total flavonoid, and total anthocyanin contents were measured by spectrophotometry, anthocyanin and phenolic profiles were analyzed by chromatography, and the antioxidant capacity was determined. This study is probably the first to demonstrate the variation and stability of bioactive compounds from maqui berries after applying different drying methods...
February 8, 2018: Journal of the Science of Food and Agriculture
Jorge González-Villagra, Acácio Rodrigues-Salvador, Adriano Nunes-Nesi, Jerry D Cohen, Marjorie M Reyes-Díaz
Drought stress is the most important stress factor for plants, being the main cause of agricultural crop loss in the world. Plants have developed complex mechanisms for preventing water loss and oxidative stress such as synthesis of abscisic acid (ABA) and non-enzymatic antioxidant compounds such as anthocyanins, which might help plants to cope with abiotic stress as antioxidants and for scavenging reactive oxygen species. A. chilensis (Mol.) is a pioneer species, colonizing and growing on stressed and disturbed environments...
March 2018: Plant Physiology and Biochemistry: PPB
Jie Li, Chunhua Yuan, Li Pan, P Annécie Benatrehina, Heebyung Chai, William J Keller, C Benjamin Naman, A Douglas Kinghorn
Bioassay-guided phytochemical investigation of a commercially available maqui berry (Aristotelia chilensis) extract used in botanical dietary supplement products led to the isolation of 16 compounds, including one phenolic molecule, 1, discovered for the first time from a natural source, along with several known compounds, 2-16, including three substances not reported previously in A. chilensis, 2, 14, and 15. Each isolate was characterized by detailed analysis of NMR spectroscopic and HRESIMS data and tested for their in vitro hydroxyl radical scavenging and quinone-reductase inducing biological activities...
October 4, 2017: Journal of Agricultural and Food Chemistry
Carlos L Cespedes, Cristian Balbontin, Jose G Avila, Mariana Dominguez, Julio Alarcon, Cristian Paz, Viviana Burgos, Leandro Ortiz, Ignacio Peñaloza-Castro, David S Seigler, Isao Kubo
It is reported in this study the effect of isolates from leaves of Aristotelia chilensis as inhibitors of acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and tyrosinase enzymes. The aim of the paper was to evaluate the activity of A. chilensis towards different enzymes. In addition to pure compounds, extracts rich in alkaloids and phenolics were tested. The most active F5 inhibited AChE (79.5% and 89.8% at 10.0 and 20.0 μg/mL) and against BChE (89.5% and 97.8% at 10.0 and 20.0 μg/mL), showing a strong mixed-type inhibition against AChE and BChE...
November 2017: Food and Chemical Toxicology
Carlos L Cespedes, Natalia Pavon, Mariana Dominguez, Julio Alarcon, Cristian Balbontin, Isao Kubo, Mohammed El-Hafidi, Jose G Avila
The effects of phytochemicals occurred in fractions and extracts of fruits of "Maqui-berry" (Aristotelia chilensis), on the expression of cyclooxygenase-2 (COX-2), inducible-nitric oxide synthases (iNOS) and the production of proinflammatory mediators were investigated in lipopolysaccharide (LPS)-activated murine macrophage RAW-264 cells, as well as their antioxidant activities. The MeOH extract (A), acetone/methanol extract (B), fractions F3, F4, subfractions (SF4-SF6, SF7, SF8-SF10, SF11-SF15, SF16-SF20), quercetin, gallic acid, luteolin, myricetin, mixtures M1, M2 and M3 exhibited potent anti-inflammatory and antioxidant activities...
October 2017: Food and Chemical Toxicology
Jorge L Alvarado, Andrés Leschot, Álvaro Olivera-Nappa, Ana-María Salgado, Hernán Rioseco, Carolina Lyon, Pilar Vigil
Delphinidin anthocyanins have previously been associated with the inhibition of glucose absorption. Blood glucose lowering effects have been ascribed to maqui berry (Aristotelia chilensis) extracts in humans after boiled rice consumption. In this study, we aimed to explore whether a standardized delphinidin-rich extract from maqui berry (Delphinol) affects glucose metabolism in prediabetic humans based on glycemia and insulinemia curves obtained from an oral glucose tolerance test (OGTT) after a challenge with pure glucose...
2016: BioMed Research International
Carolina Sánchez, Javier Villacreses, Noelle Blanc, Loreto Espinoza, Camila Martinez, Gabriela Pastor, Patricio Manque, Soledad F Undurraga, Victor Polanco
Maqui berry (Aristotelia chilensis) is a native Chilean species that produces berries that are exceptionally rich in anthocyanins and natural antioxidants. These natural compounds provide an array of health benefits for humans, making them very desirable in a fruit. At the same time, these substances also interfere with nucleic acid preparations, making RNA extraction from Maqui berry a major challenge. Our group established a method for RNA extraction of Maqui berry with a high quality RNA (good purity, good integrity and higher yield)...
2016: SpringerPlus
Adriana Bastías, Francisco Correa, Pamela Rojas, Rubén Almada, Carlos Muñoz, Boris Sagredo
Maqui (Aristotelia chilensis [Molina] Stunz) is a small dioecious tree native to South America with edible fruit characterized by very high antioxidant capacity and anthocyanin content. To preserve maqui as a genetic resource it is essential to study its genetic diversity. However, the complete genome is unknown and only a few gene sequences are available in databases. Simple sequence repeats (SSR) markers, which are neutral, co-dominant, reproducible and highly variable, are desirable to support genetic studies in maqui populations...
2016: PloS One
Johanna E Brauch, Mareike Kroner, Ralf M Schweiggert, Reinhold Carle
No abstract text is available yet for this article.
July 27, 2016: Journal of Agricultural and Food Chemistry
Matteo Marieschi, Anna Torelli, Deborah Beghé, Renato Bruni
The large commercial success of pomegranate increase the likelihood of economically motivated adulteration (EMA), which has been gradually spotted with the undeclared addition of anthocyanin-rich plants or cheaper fruit juices used as bulking and diluting agents. A method based on Sequence-Characterized Amplified Regions (SCARs) was developed to detect the presence of Aristotelia chilensis, Aronia melanocarpa, Dioscorea alata, Euterpe oleracea, Malus×domestica, Morus nigra, Sambucus nigra, Vaccinium macrocarpon, Vaccinium myrtillus, Vitis vinifera as bulking agents in Punica granatum...
July 1, 2016: Food Chemistry
Estefania Genskowsky, Luis A Puente, José A Pérez-Álvarez, Juana Fernández-López, Loreto A Muñoz, Manuel Viuda-Martos
BACKGROUND: The aim of the present study was to determine (1) the polyphenolic profile (phenolic acids, flavonoids and anthocyanins), (2) the antioxidant using four different methodologies (DPPH, ABTS, FRAP and FIC) and (3) the antibacterial properties of maqui berry [Aristotelia chilensis (Molina) Stuntz] (MB) grown in Chile. RESULTS: The HPLC analysis of MB showed a total of 19 polyphenolic compounds identified as anthocyanins (eight compounds), flavonols (10 compounds) and ellagic acid...
September 2016: Journal of the Science of Food and Agriculture
Valeria Romanucci, Daniele D'Alonzo, Annalisa Guaragna, Cinzia Di Marino, Sergio Davinelli, Giovanni Scapagnini, Giovanni Di Fabio, Armando Zarrelli
Aristotelia chilensis ([Molina], Stuntz) a member of the family Eleocarpaceae, is a plant native to Chile that is distributed in tropical and temperate Asia, Australia, the Pacific Area, and South America. The juice of its berries has important medicinal properties, as an astringent, tonic, and antidiarrhoeal. Its many qualities make the maqui berry the undisputed sovereign of the family of so-called "superfruits", as well as a valuable tool to combat cellular inflammation of bones and joints. Recently, it is discovered that the leaves of the maqui berry have important antibacterial and antitumour activities...
2016: Current Pharmaceutical Biotechnology
Carol López de Dicastillo, Francisco Rodríguez, Abel Guarda, Maria José Galotto
Development of antioxidant and antimicrobial active food packaging materials based on biodegradable polymer and natural plant extracts has numerous advantages as reduction of synthetic additives into the food, reduction of plastic waste, and food protection against microorganisms and oxidation reactions. In this way, active films based on methylcellulose (MC) and maqui (Aristotelia chilensis) berry fruit extract, as a source of antioxidants agents, were studied. On the other hand, due to the high water affinity of MC, this polymer was firstly cross-linked with glutaraldehyde (GA) at different concentrations...
January 20, 2016: Carbohydrate Polymers
Sergio Davinelli, Juan Carlos Bertoglio, Armando Zarrelli, Riccardo Pina, Giovanni Scapagnini
OBJECTIVE: Berries are a rich source of anthocyanins, and clinical data suggest that a polyphenol-rich diet may exert health-promoting effects by reducing oxidative stress. The aim of this study was to elucidate the effects of dietary supplementation with Delphinol (trademark owned by MNL Chile) standardized maqui berry (Aristotelia chilensis) extract on products of lipid peroxidation in healthy, overweight, and smoker subjects. METHODS: In a double-blind, placebo-controlled design, 42 participants (age 45-65 years) consumed in random order either a standardized extract of maqui berry (162 mg anthocyanins) or a matched placebo, given 3 times daily for 4 weeks...
2015: Journal of the American College of Nutrition
Johanna E Brauch, Mareike Kroner, Ralf M Schweiggert, Reinhold Carle
Anthocyanin stabilities in diluted and differently purified maqui preparations were assessed during storage and thermal treatment at different pH values. By sequentially depleting the matrix, the influence of polar low-molecular-weight matrix constituents and non-anthocyanin phenolics was shown to be negligible. In contrast, pH substantially affected thermal stabilities of differently glycosylated cyanidin and delphinidin derivatives. At pH 3.6, half-lives of 3-O-glycosides were substantially shorter than those of respective 3,5-O-diglycosides...
October 7, 2015: Journal of Agricultural and Food Chemistry
Leonel E Rojo, David Ribnicky, Sithes Logendra, Alex Poulev, Patricio Rojas-Silva, Peter Kuhn, Ruth Dorn, Mary H Grace, Mary Ann Lila, Ilya Raskin
We used a murine model of type II diabetes, which reproduces the major features of the human disease, and a number of cellular models to study the antidiabetic effect of ANC, a standardised anthocyanin-rich formulation from maqui berry ( Aristotelia chilensis ). We also isolated delphinidin 3-sambubioside-5-glucoside (D3S5G), a characteristic anthocyanin from maqui berry, and studied its antidiabetic properties. We observed that oral administration of ANC improved fasting blood glucose levels and glucose tolerance in hyperglycaemic obese C57BL/6J mice fed a high fat diet...
March 15, 2012: Food Chemistry
J E Brauch, M Buchweitz, R M Schweiggert, R Carle
In this study, a detailed chemical characterization of nutritionally-relevant, quality-determining constituents in dried and fresh fruits as well as juices of maqui (Aristotelia chilensis (Mol.) Stuntz) is provided. A total of 8 glycosylated anthocyanins was characterized in maqui fruits, being composed of differently substituted cyanidin and delphinidin derivatives. During processing into juice, a substantial loss in total anthocyanin contents (TAC) was observed. TAC values were also reduced after drying of maqui berries...
January 1, 2016: Food Chemistry
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"