This page has only limited features, please log in for full access.

Unclaimed
Monika Valdenegro
Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 26 August 2021 in Agronomy
Reads 0
Downloads 0

Black spot corresponds to a physiological disorder of the type of oxidative stress that occurs after the prolonged postharvest storage of Persea americana Mill. cv. Hass fruit. Industry tends to confuse this disorder with pathogen attack (Colletotrichum gloeosporioides), chilling injury, mechanical damage during harvest and transport or lenticel damage. The main objectives of this research were: (i) to develop a method to assess and differentiate lenticel damage and black spot and (ii) to study the correlation between mechanical damage and lenticel damage on the development of black spot. Avocado fruits from different orchards were evaluated at two sampling times using different harvesting systems (conventional and appropriate) and at two times of the day (a.m. or p.m.). Here, we report a method based on image analysis to differentiate and quantify lenticel damage and black spot disorder. In addition, the results show that conventional harvest increased lenticel damage and lenticel damage did not correlate with black spot development but correlated with increased weight loss during prolonged postharvest storage. These results have important commercial implications since the appropriate harvesting of avocado cv. Hass would not only control the incidence of lenticel damage, which would be an advantage in terms of external quality, but also reduce weight loss during transport to distant markets.

ACS Style

Vicente Lindh; Virgilio Uarrota; Claudio Zulueta; Juan E. Alvaro; Monika Valdenegro; Italo F. Cuneo; Domingo Mery; Romina Pedreschi. Image Analysis Reveals That Lenticel Damage Does Not Result in Black Spot Development but Enhances Dehydration in Persea americana Mill. cv. Hass during Prolonged Storage. Agronomy 2021, 11, 1699 .

AMA Style

Vicente Lindh, Virgilio Uarrota, Claudio Zulueta, Juan E. Alvaro, Monika Valdenegro, Italo F. Cuneo, Domingo Mery, Romina Pedreschi. Image Analysis Reveals That Lenticel Damage Does Not Result in Black Spot Development but Enhances Dehydration in Persea americana Mill. cv. Hass during Prolonged Storage. Agronomy. 2021; 11 (9):1699.

Chicago/Turabian Style

Vicente Lindh; Virgilio Uarrota; Claudio Zulueta; Juan E. Alvaro; Monika Valdenegro; Italo F. Cuneo; Domingo Mery; Romina Pedreschi. 2021. "Image Analysis Reveals That Lenticel Damage Does Not Result in Black Spot Development but Enhances Dehydration in Persea americana Mill. cv. Hass during Prolonged Storage." Agronomy 11, no. 9: 1699.

Journal article
Published: 25 July 2020 in Antibiotics
Reads 0
Downloads 0

Arrayan and peumo fruits are commonly used in the traditional medicine of Chile. In this study, the concentration of the extracts halving the bacterial viability and biofilms formation and disruption of the drug-sensitive and drug-resistant strains of Staphylococcus aureus and Pseudomonas aeruginosa was determined. The chemical composition of extracts was analyzed by high-resolution liquid chromatography coupled with mass spectrometry (U-HPLC/MS). The arrayan extract (Inhibitory concentration IC50 0.35 ± 0.01 mg/mL) was more effective than peumo extract (IC50 0.53 ± 0.02 mg/mL) in the inhibition of S. aureus planktonic cells. Similarly, the arrayan extract was more effective in inhibiting the adhesion (S. aureus IC50 0.23 ± 0.02 mg/mL, P. aeruginosa IC50 0.29 ± 0.02 mg/mL) than peumo extracts (S. aureus IC50 0.47 ± 0.03 mg/mL, P. aeruginosa IC50 0.35 ± 0.01 mg/mL). Both extracts inhibited quorum sensing in a concentration-dependent manner, and the most significant was the autoinducer-2 type communication inhibition by arrayan extract. Both extracts also disrupted preformed biofilm of P. aeruginosa (arrayan IC50 0.56 ± 0.04 mg/mL, peumo IC50 0.59 ± 0.04 mg/mL). However, neither arrayan nor peumo extracts disrupted S. aureus mature biofilm. U-HPLC/MS showed that both fruit extracts mainly possessed quercetin compounds; the peumo fruit extract also contained phenolic acids and phenylpropanoids. Our results suggested that both extracts could be used as natural antimicrobials for some skin and nosocomial infections.

ACS Style

Jitka Viktorová; Rohitesh Kumar; Kateřina Řehořová; Lan Hoang; Tomas Ruml; Carlos R. Figueroa; Monika Valdenegro; Lida Fuentes. Antimicrobial Activity of Extracts of Two Native Fruits of Chile: Arrayan (Luma apiculata) and Peumo (Cryptocarya alba). Antibiotics 2020, 9, 444 .

AMA Style

Jitka Viktorová, Rohitesh Kumar, Kateřina Řehořová, Lan Hoang, Tomas Ruml, Carlos R. Figueroa, Monika Valdenegro, Lida Fuentes. Antimicrobial Activity of Extracts of Two Native Fruits of Chile: Arrayan (Luma apiculata) and Peumo (Cryptocarya alba). Antibiotics. 2020; 9 (8):444.

Chicago/Turabian Style

Jitka Viktorová; Rohitesh Kumar; Kateřina Řehořová; Lan Hoang; Tomas Ruml; Carlos R. Figueroa; Monika Valdenegro; Lida Fuentes. 2020. "Antimicrobial Activity of Extracts of Two Native Fruits of Chile: Arrayan (Luma apiculata) and Peumo (Cryptocarya alba)." Antibiotics 9, no. 8: 444.

Review
Published: 26 July 2019 in Foods
Reads 0
Downloads 0

In recent years, there has been an increasing interest in studying food and its derived ingredients that can provide beneficial effects for human health. These studies are helping to understand the bases of the ancestral use of several natural products, including native fruits as functional foods. As a result, the polyphenol profile and the antioxidant capacity of the extracts obtained from different Patagonian native berries have been described. This review aims to provide valuable information regarding fruit quality, its particular compound profile, and the feasibility of producing functional foods for human consumption to prevent disorders such as metabolic syndrome and cardiovascular diseases. We also discuss attempts concerning the domestication of these species and generating knowledge that strengthens their potential as traditional fruits in the food market and as a natural heritage for future generations. Finally, additional efforts are still necessary to fully understand the potential beneficial effects of the consumption of these berries on human health, the application of suitable technology for postharvest improvement, and the generation of successfully processed foods derived from Patagonian berries.

ACS Style

Lida Fuentes; Carlos R. Figueroa; Monika Valdenegro; Raúl Vinet. Patagonian Berries: Healthy Potential and the Path to Becoming Functional Foods. Foods 2019, 8, 289 .

AMA Style

Lida Fuentes, Carlos R. Figueroa, Monika Valdenegro, Raúl Vinet. Patagonian Berries: Healthy Potential and the Path to Becoming Functional Foods. Foods. 2019; 8 (8):289.

Chicago/Turabian Style

Lida Fuentes; Carlos R. Figueroa; Monika Valdenegro; Raúl Vinet. 2019. "Patagonian Berries: Healthy Potential and the Path to Becoming Functional Foods." Foods 8, no. 8: 289.

Review
Published: 03 June 2019 in Horticulturae
Reads 0
Downloads 0

Fleshy fruits are characterized by having a developmentally and genetically controlled, highly intricate ripening process, leading to dramatic modifications in fruit size, texture, color, flavor, and aroma. Climacteric fruits such as tomato, pear, banana, and melon show a ripening-associated increase in respiration and ethylene production and these processes are well-documented. In contrast, the hormonal mechanism of fruit development and ripening in non-climacteric fruit, such as strawberry, grape, raspberry, and citrus, is not well characterized. However, recent studies have shown that non-climacteric fruit development and ripening, involves the coordinated action of different hormones, such as abscisic acid (ABA), auxin, gibberellins, ethylene, and others. In this review, we discuss and evaluate the recent research findings concerning the hormonal regulation of non-climacteric fruit development and ripening and their cross-talk by taking grape, strawberry, and raspberry as reference fruit species.

ACS Style

Lida Fuentes; Carlos R. Figueroa; Monika Valdenegro. Recent Advances in Hormonal Regulation and Cross-Talk during Non-Climacteric Fruit Development and Ripening. Horticulturae 2019, 5, 45 .

AMA Style

Lida Fuentes, Carlos R. Figueroa, Monika Valdenegro. Recent Advances in Hormonal Regulation and Cross-Talk during Non-Climacteric Fruit Development and Ripening. Horticulturae. 2019; 5 (2):45.

Chicago/Turabian Style

Lida Fuentes; Carlos R. Figueroa; Monika Valdenegro. 2019. "Recent Advances in Hormonal Regulation and Cross-Talk during Non-Climacteric Fruit Development and Ripening." Horticulturae 5, no. 2: 45.

Journal article
Published: 03 November 2018 in Scientia Horticulturae
Reads 0
Downloads 0

The conjugation of indole-3-acetic acid (IAA) to amino acids by indole-3-acetic acid (IAA)-amido synthetases (GH3) is an important part of auxin level regulation. However, the auxin conjugation during development of soft fruits such as raspberry is poorly understood. In this study, indole-3-acetic acid (IAA)-amido synthetases in raspberry, designated as RiGH3 (RiGH3.1, RiGH3.5 transcripts) were evaluated during fruit development of raspberry cultivar Rubus idaeus Heritage, and under IAA treatment. The results showed that before to the onset of ripening the fruit size, weight and the expression of IAA-amido synthetase RiGH3.1 transcript levels increased. Then when the fruits attain full development, fruit firmness and titratable acidity decreased, in the contrast to ethylene production and total soluble solids content increasing. However, the RiGH3.5 transcript was found to be expressed primarily in flowers. When compared to untreated control fruit, fruit treated with 1 mM of IAA at white stage, showed an increase of RiGH3.1 transcript during in-vitro assay (10 °C by 18 h). However, no significant change in the levels of RiGH3.5 was observed during IAA treatment. Multiple alignments of the full-length predicted RiGH3.1 protein sequences revealed a high sequence homology with proteins deduced sequences described for other fruit of Rosaceae species. The RiGH3.1 deduced sequence showed the presence of binding motives for IAA and aspartic acid, and indicate that the isolated sequence have the typical motives of GH3.1 protein family. These findings give new insights into the possible role of RiGH3.1 transcripts, and the IAA conjugation (in maintaining the low concentration of free IAA) during raspberry fruit ripening.

ACS Style

Maricarmen Bernales; Liliam Monsalve; Anibal Ayala-Raso; Monika Valdenegro; Juan-Pablo Martínez; Dante Travisany; Bruno Defilippi; Mauricio González-Agüero; Sam Cherian; Lida Fuentes. Expression of two indole-3-acetic acid (IAA)-amido synthetase (GH3) genes during fruit development of raspberry (Rubus idaeus Heritage). Scientia Horticulturae 2018, 246, 168 -175.

AMA Style

Maricarmen Bernales, Liliam Monsalve, Anibal Ayala-Raso, Monika Valdenegro, Juan-Pablo Martínez, Dante Travisany, Bruno Defilippi, Mauricio González-Agüero, Sam Cherian, Lida Fuentes. Expression of two indole-3-acetic acid (IAA)-amido synthetase (GH3) genes during fruit development of raspberry (Rubus idaeus Heritage). Scientia Horticulturae. 2018; 246 ():168-175.

Chicago/Turabian Style

Maricarmen Bernales; Liliam Monsalve; Anibal Ayala-Raso; Monika Valdenegro; Juan-Pablo Martínez; Dante Travisany; Bruno Defilippi; Mauricio González-Agüero; Sam Cherian; Lida Fuentes. 2018. "Expression of two indole-3-acetic acid (IAA)-amido synthetase (GH3) genes during fruit development of raspberry (Rubus idaeus Heritage)." Scientia Horticulturae 246, no. : 168-175.

Data article
Published: 27 October 2018 in Data in Brief
Reads 0
Downloads 0

The data presented in this article are related to the research article entitled “Expression of two indole-3-acetic acid (IAA)-amido synthetase (GH3) genes during fruit development of raspberry (Rubus idaeus Heritage)” (Bernales et al., In press). This data article describes the relation of all size variables between them and with the weight showing an increasing trend between length and weight and an inverse relation of fruit firmness and ethylene production during development. In addition, IAA treatment during auxin in-vitro assay showed no significant changes in firmness, a significant increase of ethylene and respiratory production.

ACS Style

Liliam Monsalve; Aníbal Ayala-Raso; Maricarmen Bernales; Monika Valdenegro; Bruno Defilippi; Mauricio González-Agüero; Sam Cherian; Lida Fuentes. Dataset on quality and physiological changes of raspberry fruit during their development and under auxin in-vitro assay. Data in Brief 2018, 21, 1521 -1525.

AMA Style

Liliam Monsalve, Aníbal Ayala-Raso, Maricarmen Bernales, Monika Valdenegro, Bruno Defilippi, Mauricio González-Agüero, Sam Cherian, Lida Fuentes. Dataset on quality and physiological changes of raspberry fruit during their development and under auxin in-vitro assay. Data in Brief. 2018; 21 ():1521-1525.

Chicago/Turabian Style

Liliam Monsalve; Aníbal Ayala-Raso; Maricarmen Bernales; Monika Valdenegro; Bruno Defilippi; Mauricio González-Agüero; Sam Cherian; Lida Fuentes. 2018. "Dataset on quality and physiological changes of raspberry fruit during their development and under auxin in-vitro assay." Data in Brief 21, no. : 1521-1525.

Evaluation study
Published: 10 May 2018 in Journal of the Science of Food and Agriculture
Reads 0
Downloads 0

BACKGROUND Pomegranate (Punica granatum) is a non‐climacteric fruit susceptible to chilling injury (CI) at temperatures below 5 °C. To understand the influences of ethylene and modified atmosphere on CI physiological disorders of pomegranate, the exogenous ethrel (0.5, 1, and 1.5 μg L‐1) treatments, 1‐methylcyclopropene (1‐MCP) (1 μL L‐1) exposure, packaging in modified atmosphere (MAP: XTend ™ bags), a MAP/1‐MCP combination, and packaging in macro‐perforated bags (MPB) were applied. The treated fruits were cold stored (2 ± 1 °C; 85% RH) and sampled during 120 d + 3 d at 20 °C. RESULTS During cold storage CI symptoms started at 20 d in MPB and at 60 d for all exogenous ethylene treatments, being delayed to 120 d in MAP, 1‐MCP, and MAP/1‐MCP treatments. MPB and ethylene treatments induced significantly electrolyte leakage, oxidative damage, lipid peroxidation, ethylene and CO2 production and 1‐aminocyclopropane‐1‐carboxylic acid oxidase activity, without change in TSS, TA, or skin and aril colours. Conversely, MAP by itself or in combination with 1‐MCP application, effectively delayed CI symptoms. CONCLUSION During long‐term cold storage of this non‐climacteric fruit, ethrel application induce endogenous ethylene biosynthesis accelerating the appearance of CI symptoms as a contrary to observe for MAP and 1‐MCP treatments.

ACS Style

Mónika Valdenegro; Camila Huidobro; Liliam Monsalve; Maricarmen Bernales; Lida Fuentes; Ricardo Simpson. Effects of ethrel, 1-MCP and modified atmosphere packaging on the quality of ‘Wonderful’ pomegranates during cold storage. Journal of the Science of Food and Agriculture 2018, 98, 4854 -4865.

AMA Style

Mónika Valdenegro, Camila Huidobro, Liliam Monsalve, Maricarmen Bernales, Lida Fuentes, Ricardo Simpson. Effects of ethrel, 1-MCP and modified atmosphere packaging on the quality of ‘Wonderful’ pomegranates during cold storage. Journal of the Science of Food and Agriculture. 2018; 98 (13):4854-4865.

Chicago/Turabian Style

Mónika Valdenegro; Camila Huidobro; Liliam Monsalve; Maricarmen Bernales; Lida Fuentes; Ricardo Simpson. 2018. "Effects of ethrel, 1-MCP and modified atmosphere packaging on the quality of ‘Wonderful’ pomegranates during cold storage." Journal of the Science of Food and Agriculture 98, no. 13: 4854-4865.

Journal article
Published: 04 October 2017 in Journal of Food Process Engineering
Reads 0
Downloads 0

The aim of this work was to develop, characterize and standardize four food products using cassava: cassava cake, dessert, ice cream, and a milk drink, evaluating the effect of cooking on quality. The methodology included the food handling and processing of the cassava products and the performance of textural, rheological, nutritional, and sensory studies of the final products. The sensory panel favorably rated all foods. All of the products developed received high acceptability scores from the sensory panel. The apparent viscosity of the beverage increased over time, whereas the firmness of the ice cream bar and the firmness of the cassava cake did not significantly change during the observation period. The sensory analysis identified typical descriptors for each food. We concluded that cassava is a functional raw material, which combined with other additives, conserves their properties, and is ideal for preparing bakery products, flavored beverages, and ice cream.Practical applicationsIn this study, four different food processing alternatives by cassava were performed by the community support of rural women from the village of Lebanon Township Andes, west of the Department of Antioquia in Colombia. Process lines were established for foods made from cassava, for its standardization and incorporation of processing of tubers in diet of the indigenous population of Colombia. Subsequent to this stage, the food obtained was evaluated physicochemical, nutritional, and sensory. It is important that research projects support the rural entrepreneurial units to strengthen the food security in the region as well as to improve the quality of life through the commercialization of new products. This research may contribute with strategy for the development and utilization of cassava and cassava products that can provide incentives for farmers, crop vendors and food processors to increase their incomes, and it can also provide food security for households producing and consuming this foods.

ACS Style

Oscar Vega; Luz Marina Carvajal; Faber Rodríguez; María Clara Marín; Cristian Ramírez; Ricardo Simpson; Mónika Valdenegro. Effect of thermal pretreatments and cooking characteristics on physicochemical, rheological, and sensorial properties of food products based on cassava (Manihot esculentaCrantz). Journal of Food Process Engineering 2017, 41, e12612 .

AMA Style

Oscar Vega, Luz Marina Carvajal, Faber Rodríguez, María Clara Marín, Cristian Ramírez, Ricardo Simpson, Mónika Valdenegro. Effect of thermal pretreatments and cooking characteristics on physicochemical, rheological, and sensorial properties of food products based on cassava (Manihot esculentaCrantz). Journal of Food Process Engineering. 2017; 41 (1):e12612.

Chicago/Turabian Style

Oscar Vega; Luz Marina Carvajal; Faber Rodríguez; María Clara Marín; Cristian Ramírez; Ricardo Simpson; Mónika Valdenegro. 2017. "Effect of thermal pretreatments and cooking characteristics on physicochemical, rheological, and sensorial properties of food products based on cassava (Manihot esculentaCrantz)." Journal of Food Process Engineering 41, no. 1: e12612.

Journal article
Published: 01 May 2015 in Journal of Plant Physiology
Reads 0
Downloads 0

Red Raspberry (Rubus idaeus) is traditionally classified as non-climacteric, and the role of ethylene in fruit ripening is not clear. The available information indicates that the receptacle, a modified stem that supports the drupelets, is involved in ethylene production of ripe fruits. In this study, we report receptacle-related ethylene biosynthesis during the ripening of fruits of cv. Heritage. In addition, the expression pattern of ethylene biosynthesis transcripts was evaluated during the ripening process. The major transcript levels of 1-aminocyclopropane-1-carboxylic acid synthase (RiACS1) and 1-aminocyclopropane-1-carboxylic acid oxidase (RiACO1) were concomitant with ethylene production, increased total soluble solids (TSS) and decreased titratable acidity (TA) and fruit firmness. Moreover, ethylene biosynthesis and transcript levels of RiACS1 and RiACO1 were higher in the receptacle, sustaining the receptacle's role as a source of ethylene in regulating the ripening of raspberry.

ACS Style

Lida Fuentes; Liliam Monsalve; Luis Morales-Quintana; Mónika Valdenegro; Juan-Pablo Martínez; Bruno G. Defilippi; Mauricio González-Agüero. Differential expression of ethylene biosynthesis genes in drupelets and receptacle of raspberry (Rubus idaeus). Journal of Plant Physiology 2015, 179, 100 -105.

AMA Style

Lida Fuentes, Liliam Monsalve, Luis Morales-Quintana, Mónika Valdenegro, Juan-Pablo Martínez, Bruno G. Defilippi, Mauricio González-Agüero. Differential expression of ethylene biosynthesis genes in drupelets and receptacle of raspberry (Rubus idaeus). Journal of Plant Physiology. 2015; 179 ():100-105.

Chicago/Turabian Style

Lida Fuentes; Liliam Monsalve; Luis Morales-Quintana; Mónika Valdenegro; Juan-Pablo Martínez; Bruno G. Defilippi; Mauricio González-Agüero. 2015. "Differential expression of ethylene biosynthesis genes in drupelets and receptacle of raspberry (Rubus idaeus)." Journal of Plant Physiology 179, no. : 100-105.