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Dive into the research topics where Carolina A. Henríquez is active.

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Featured researches published by Carolina A. Henríquez.


Journal of Food Science | 2010

Development of an ingredient containing apple peel, as a source of polyphenols and dietary fiber.

Carolina A. Henríquez; Hernán Speisky; Italo Chiffelle; Tania Valenzuela; Manuel Araya; Ricardo Simpson; S. Almonacid

Apple peel is a waste product from dried apple manufacture. The content of phenolic compounds, dietary fiber, and mineral are higher in apple peel, compared to other edible parts of this fruits. The objective of this study was to develop an ingredient from Granny Smith apple peel, using a pilot scale double drum-dryer, as drying technology. The control of all steps to maximize the retention of phenolic compounds and dietary fiber was considered. Operational conditions, such as drying temperature and time were determined, as well as important preprocessing steps like grinding and PPO inhibition. In addition, the physical-chemical characteristics, mineral and sugar content, and technological functional properties such as water retention capacity, solubility index, and dispersability among others, were analyzed. A simple, economical, and suitable pilot scale process, to produce a powder ingredient from apple peel by-product, was obtained. The drying process includes the application of ascorbic acid at 0.5% in the fresh apple peel slurry, drum-dryer operational conditions were 110 degrees C, 0.15 rpm and 0.2 mm drum clearance. The ingredient developed could be considered as a source of phenolic compounds (38.6 mg gallic acid equivalent/g dry base) and dietary fiber (39.7% dry base) in the formulation of foods. Practical Application: A method to develop an ingredient from Granny Smith apple peel using a pilot scale double drum-dryer as drying technology was developed. The method is simple, economical, feasible, and suitable and maximizes the retention of phenolic compounds and dietary fiber present in the raw matter. The ingredient could be used in the formulation of foods.


Revista Chilena de Historia Natural | 2004

Efecto de la fragmentación del hábitat sobre la calidad de las semillas en Lapageria rosea

Carolina A. Henríquez

La fragmentacion del habitat tiene un efecto negativo sobre la adecuacion biologica de las plantas por la reduccion en la cantidad de semillas producidas. Sin embargo, la fragmentacion del habitat tambien podria disminuir la adecuacion biologica de las plantas a traves de la reduccion en la calidad de las semillas producidas, al reducir atributos como la viabilidad, tamano o su capacidad germinativa. Esto podria ocurrir porque la reduccion en los tamanos poblacionales en fragmentos, junto con el aumento en el grado de aislamiento, podrian generar una reduccion de la variabilidad genetica de las poblaciones e inducir a la expresion de depresion por endocruza. En este trabajo muestro el efecto de la fragmentacion del bosque maulino sobre la calidad de las semillas producidas en la especie Lapageria rosea. Calidad es definida aqui como viabilidad, tamano y capacidad germinativa de las semillas. Colecte semillas desde fragmentos de bosque y desde un bosque continuo, en el bosque maulino de Chile central. En al laboratorio se estimaron los porcentajes de viabilidad, el tamano y la capacidad germinativa de las semillas colectadas. Los resultados muestran que las semillas producidas en fragmentos de bosque presentan porcentajes de viabilidad similares a las semillas producidas en el bosque continuo, sin embargo la variabilidad en estos porcentajes es mayor en las semillas de los fragmentos. Ademas, las semillas de fragmentos son de menor tamano y poseen menor capacidad germinativa que las semillas de bosque continuo. Estas caracteristicas de las semillas podria determinar que en fragmentos de bosque exista una reduccion en el establecimiento de nuevos individuos, pudiendo inducir a un efecto negativo sobre la sobrevivencia de las poblaciones a largo plazo


Biological Conservation | 2001

The effect of introduced herbivores upon an endangered tree (Beilschmiedia miersii, Lauraceae)

Carolina A. Henríquez; Javier A. Simonetti

Abstract Beilschmiedia miersii is an endemic endangered tree of central Chile, protected only in La Campana National park. The regeneration of B. miersii is very low, presumably due to strong fruit and seedling predation by livestock. The aim of this study was to establish whether herbivores impact recruitment in populations of the species. In particular, we want to compare the herbivore effect in non-protected populations with protected populations inside a national park. We compared demographic features and the regeneration process in four populations, two located inside and two outside the park. We expect populations inside the park to exhibit a significantly greater recruitment, expressed in seedling establishment and survival, relative to those outside the park. Outside the park, livestock predation on fruits and herbivory on seedlings could hamper recruitment. However, fruit and seedling predation was similarly high both inside and outside the park, posing a significant constraint on the regeneration of B. miersii. The main associated causes were the presence of livestock and seedling desiccation. If the survival of B. miersii is to be achieved, managing livestock pressure, possibly through zoning, seems mandatory.


Arctic, Antarctic, and Alpine Research | 2007

Display Size Preferences and Foraging Habits of High Andean Butterflies Pollinating Chaetanthera lycopodioides (Asteraceae) in the Subnival of the Central Chilean Andes

Mary T. K. Arroyo; Irène Till-Bottraud; Cristian Torres; Carolina A. Henríquez; Jaime Martínez

ABSTRACT In our study, we asked whether butterflies visiting Chaetanthera lycopodioides (Asteraceae) in the subnival at 3450 m a.s.l. in the central Andes prefer larger floral displays. To answer this question, we compared the population distribution of display sizes with the distribution of visited display sizes at two sites. Six high elevation butterflies: Faunula leucoglene (Satyridae) (the dominant species), Hylephila sp. (Hesperiidae), Phulia nymphula (Pieridae), Vanessa terpsichore (Nymphalidae), Tatochila mercedis (Nymphalidae), and Yramea modesta (Nymphalidae) were reported as visitors. Butterflies tended to discriminate against plants with a single open head, preferring larger display sizes at both sites. Butterflies visited few plants per bout (mean: 3.1–4.5) and probed increasingly smaller proportions of the open heads per plant with increasing display size (overall mean: 45.8–48.4%). Results suggest that high elevation butterflies tend to prefer larger display sizes over smaller ones, but final choices are conditioned by the relative abundance of each display size in a population. Although previous studies show that butterflies prefer larger artificial individual flowers over smaller ones, our work appears to constitute the first report of butterfly preference for larger floral displays in any plant species or ecosystem.


Gayana Botanica | 2012

Fenología reproductiva de Pouteria splendens (Sapotaceae)

Carolina A. Henríquez; Gastón J. Sotes; Ramiro O. Bustamante

Pouteria splendens (A.DC.) Kuntze (lucumo silvestre, palo colorado) es un arbusto endemico con problemas de conservacion de Chile central. Es la unica especie representante de la familia Sapotaceae en el pais y se conoce muy poco de su ciclo de vida. Se estudio su fenologia reproductiva durante la primavera y verano, desde septiembre 2007 hasta abril 2008, en la poblacion remanente mas grande, localizada en Los Molles (V Region de Valparaiso). Se encontro un incremento en la produccion de yemas florales, flores y frutos desde septiembre a febrero, decayendo en marzo. Al igual que en otras especies de ambientes mediterraneos, el maximo en la formacion de botones florales, flores y frutos ocurrio en epoca de verano, durante febrero. Tambien detectamos una alta sincronia en la fenologia entre los individuos en la poblacion estudiada.


Revista Chilena de Historia Natural | 2013

Distribución de plántulas y germinación de semillas del lúcumo chileno (Pouteria splendens) en Los Molles, Chile

Gastón J. Sotes; Ramiro O. Bustamante; Carolina A. Henríquez

Pouteria splendens (lucumo chileno, palo colorado) es un arbol endemico de Chile central con problemas de conservacion. Es la unica especie representante de la familia Sapotaceae en el pais y se conoce muy poco de su ciclo de vida. En este trabajo describimos el patron de distribucion espacial de plantulas en la poblacion remanente de mayor tamano de la especie, e investigamos el efecto de la disponibilidad de agua, la presencia de pericarpo en las semillas y de la hojarasca en la capacidad de germinacion. La densidad de plantulas fue mayor bajo el dosel de las plantas madres, que fuera de estas. Solo la disponibilidad de agua tuvo un efecto significativo sobre la germinacion. La especie tiene el potencial de regenerar, en futuros planes de conservacion y restauracion de la especie hay que aprovechar el efecto nodriza que estaria ejerciendo el dosel.


Acta Oecologica-international Journal of Ecology | 2006

Erratic pollination, high selfing levels and their correlates and consequences in an altitudinally widespread above-tree-line species in the high Andes of Chile

Mary T. K. Arroyo; María S. Muñoz; Carolina A. Henríquez; Irène Till-Bottraud; Fernanda Pérez


Biodiversity and Conservation | 2006

Depressed Pollination of Lapageria rosea Ruiz et Pav. (Philesiaceae) in the Fragmented Temperate Rainforest of Southern South America

Carlos E. Valdivia; Javier A. Simonetti; Carolina A. Henríquez


Food Chemistry | 2008

Characterization of piñon seed (Araucaria araucana (Mol) K. Koch) and the isolated starch from the seed

Carolina A. Henríquez; Berta Escobar; Fernando Figuerola; Italo Chiffelle; Hernán Speisky; Ana María Estévez


Archive | 1998

The effect of seed size on germination and seedling growth of Cryptocarya alba (Lauraceae) in Chile

Paulina Chacón; Ramiro O. Bustamante; Carolina A. Henríquez

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