What`s New in Melasma Treatment

( Ivonne Arellano ) 대한피부과학회 2005 초록집 Vol.43 No.10

Determination of Capsaicin, Ascorbic Acid, Total Phenolic Compounds and Antioxidant Activity of Capsicum annuum L. var. serrano by Mid Infrared Spectroscopy (Mid-FTIR) and Chemometric Analysis

Ivonne Domínguez-Martínez,Ofelia Gabriela Meza-Márquez,Guillermo Osorio-Revilla,José Proal-Nájera,Tzayhrí Gallardo-Velázquez 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.1

Fourier transform mid-infrared (Mid-FTIR) spectroscopyin conjunction with multivariate analysis was used to predict thecapsaicin content, ascorbic acid, total phenolic compounds, andantioxidant activity of Capsicum annuum L. variety serrano. Twomultivariate calibrations, partial least square (PLS), and principalcomponent regression (PCR) were optimized to construct thecalibration models. The best models used to quantify the abovementioned compounds were obtained with the PLS algorithm andcoefficients of determination (R2) greater than 0.998 as well as astandard error calibration less than 0.098. The results demonstratedthat Mid-FTIR spectroscopy in combination with multivariateanalysis can be effectively used for to quantify the capsaicin,ascorbic acid, total phenol content, and antioxidant activity ofCapsicum annuum var. serrano. Mid-FTIR spectroscopy incombination with multivariate calibration offers rapid, easy samplepreparation, is environmentally friendly, and is operationallyuncomplicated, demonstrating the significant advantages of thechemometric models compared with conventional methods ofanalysis.

Canción de tumba de Julián Herbert

Ivonne Sanchez Becerril 부산외국어대학교 중남미지역원 2013 이베로아메리카 Vol.15 No.1

Determination of Capsaicin, Ascorbic Acid, Total Phenolic Compounds and Antioxidant Activity of Capsicum annuum L. var. serrano by Mid Infrared Spectroscopy (Mid-FTIR) and Chemometric Analysis

Dominguez-Martinez, Ivonne,Meza-Marquez, Ofelia Gabriela,Osorio-Revilla, Guillermo,Proal-Najera, Jose,Gallardo-Velazquez, Tzayhri The Korean Society for Applied Biological Chemistr 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.1

Fourier transform mid-infrared (Mid-FTIR) spectroscopy in conjunction with multivariate analysis was used to predict the capsaicin content, ascorbic acid, total phenolic compounds, and antioxidant activity of Capsicum annuum L. variety serrano. Two multivariate calibrations, partial least square (PLS), and principal component regression (PCR) were optimized to construct the calibration models. The best models used to quantify the above mentioned compounds were obtained with the PLS algorithm and coefficients of determination ($R^2$) greater than 0.998 as well as a standard error calibration less than 0.098. The results demonstrated that Mid-FTIR spectroscopy in combination with multivariate analysis can be effectively used for to quantify the capsaicin, ascorbic acid, total phenol content, and antioxidant activity of Capsicum annuum var. serrano. Mid-FTIR spectroscopy in combination with multivariate calibration offers rapid, easy sample preparation, is environmentally friendly, and is operationally uncomplicated, demonstrating the significant advantages of the chemometric models compared with conventional methods of analysis.

Street sale of pulque and sociospatial practices: A gender perspective in central Mexico

Sandra Blas-Yanez,Humberto Thom e-Ortiz,Ivonne Vizcarra-Bordi,Angelica Espinoza-Ortega 한국식품연구원 2018 Journal of Ethnic Foods Vol.5 No.4

Background: Pulque is an agave (agave salmiana) alcoholic beverage, with a high nutritional content, which is part of the diet and ritual life of different ethnic groups in central Mexico. Since pre-Hispanic times, it has been commercialized and consumed in street markets. There is limited knowledge about the strategies that women who sell pulque use to face the mechanisms of exclusion, discrimination and control established for the sale of pulque. The objective of this paper is to analyze, with a gender perspective, the socio-spatial practices that are reproduced in the sale of pulque in central Mexico. Methods: Through an inductive method, empirical evidence was gathered to understand the social practices related to gender, which affect the material and symbolic continuity of pulque. A qualitative case study was carried out in a street market in central Mexico. The case was selected according to the following criteria: i) it is a market with a historical depth close to 200 years; ii) it is considered the largest street market in Latin America; iii) it has a large number of buyers and sellers; and iv) it has an important offer of ethnic foods. Data was collected between 2016 and 2017. Results: Motivational, experiential and discursive differences were found in the ways that the public space is used between women and men who sell pulque in the largest street market in Mexico. Women and men continue to practice forms of sale and consumption of pulque that deepen asymmetric power relations and exacerbate socio-spatial segregation. Despite the persistence of exclusionary practices between genders, the role played by women is fundamental in the economic and cultural reproduction of ethnic foods such as pulque. Conclusions: The perspective of feminist geography allow us to understand the differences between men and women who share the same space, showing how those socio-spatial gender practices, generate processes of marginalization and inequalities that almost always disadvantage women. It is expected that this document will be useful for the pulque sellers and will serve to recognize the female work thatallows the maintenance of ethnic alimentary patterns, in order to implement fair and inclusive spatial policies.

Ethnomedicine and ethnobotany of Maerua subcordata (Gilg) DeWolf

Mebrahtom Gebrelibanos Hiben,Jochem Louisse,Laura H.J. de Haan,Ivonne M. C. M. Rietjens 한국식품연구원 2019 Journal of Ethnic Foods Vol.6 No.-

Background: Wild edible plants are valuable resources for improving food and nutritional security. Besides, they may provide important health benefits since the health-promoting components of plant-based foods usually exist at higher levels in wild plants. As a result, they are being sought as under-exploited potential sources of a health-promoting diet or a possible strategy to develop novel foods. In such exploration, ethnobotanical and ethnomedicinal data offer a fundamental step. The present study provides ethnomedicinal data on Maerua subcordata (Gilg) DeWolf (Capparidaceae). Methods: The ethnomedicinal data was collected from the Kunama ethnics of northern Ethiopia via focus group discussion and oral interview. Supporting ethnobotanical data from relevant literature was also compiled and systematically reviewed. Results: The results show that M. subcordata tuber is used by the Kunamas to manage malaria, malaria symptoms (fever, pain, gastrointestinal disorders), and seasonal cough while leaves are used for wound healing. In east Africa, its triple potential use as water purifying agent, food item, and herbal medicine was specified. As a herbal medicine, the tuber is used to manage a wide range of disorders including pain, infections, wounds, diabetes, blood pressure, and loss of appetite. Its use as laxative and abortifacient was also indicated. Leaves are used to treat wounds and ophthalmic and respiratory problems. As a food item, fruits are eaten during times of both food scarcity and food abundance while the tuber is used as a famine food. Conclusion: In East Africa, M. subcordata represents a wild food and medicinal plant, which may be developed into a functional food.

Gender inequalities in the sale of handmade corn tortillas in central Mexican markets: before and during the COVID-19 pandemic

Cárdenas-Marcelo Alma Lili,Espinoza-Ortega Angélica,Vizcarra-Bordi Ivonne 한국식품연구원 2022 Journal of Ethnic Foods Vol.9 No.-

The objective of this study was to analyze gender inequalities and intersectionality experienced by rural-indigenous women who produce and sell native maize tortillas at three different markets-tianguis in central Mexico, facing the COVID-19 pandemic.This was a qualitative study based on 36 in-depth interviews before pandemic (2018), as well as 16 interviews during pandemic (2020) of women engaged in this work.Making corn tortillas by hand is one of the culturally assigned gender roles in the indigenous population of the Mazahua region, which is why their sale in local markets as a female strategy to have access to income for household sustenance has been widely by the communities. The configuration of the different market-space for the sale of handmade tortillas, reflects the inequalities of gender and intersectionality (ethnicity, class, age, family life cycle and education levels). The women in conditions of poverty, landlessness, and with school-age children, have met greater disadvantages in continuing to sell tortillas in the face of the experience of pandemic restrictions.The women who were already disadvantaged by their intersectional relationships continue to experience the same inequalities that conditioned their position in the marketplaces before the pandemic, sustaining a marginal but constant market.

Cocoa: a functional food that decreases insulin resistance and oxidative damage in young adults with class II obesity

José Arnold González-Garrido,José Rubén García-Sánchez,Carlos Javier López-Victorio,Adelma Escobar-Ramírez,Ivonne María Olivares-Corichi 한국영양학회 2023 Nutrition Research and Practice Vol.17 No.2

BACKGROUND/OBJECTIVES: Cocoa consumption is associated with health benefits due to its high content of polyphenols. However, the effects of short-term cocoa consumption remain unclear. We aimed to determine the effects generated by cocoa consumption (for 7 days) in young adults in normoweight and class II obesity. SUBJECTS/METHODS: Before-and-after study was carried out in normoweight (NW) (n = 15) and class II obesity (CIIO) (n = 15) young adults. The NW and CIIO participants consumed 25 and 39 g of cocoa, respectively, per day for 7 days. The effect of cocoa consumption was evaluated on the lipid profile, insulin resistance (IR), and inflammation. Oxidative damage was also examined by assessing the biomarkers of oxidative damage in plasma. In addition, recombinant human insulin was incubated with blood obtained from the participants, and the molecular damage to the hormone was analyzed. RESULTS: Cocoa consumption resulted in decreased low-density lipoprotein-cholesterol in both groups (P = 0.04), while the total cholesterol, high-density lipoprotein cholesterol, and triglycerides were maintained at the recommended levels. Initially, IR was detected in the CIIO group (homeostasis model assessment [HOMA] = 4.78 ± 0.4), which is associated with molecular damage to insulin. Interestingly, intervention with cocoa resulted in improved IR (HOMA = 3.14 ± 0.31) (P = 0.0018) as well as molecular damage to insulin. Finally, cocoa consumption significant decreased the arginase activity (P = 0.0249) in the CIIO group; this is a critical enzymatic activity in the inflammatory process associated with obesity. CONCLUSIONS: The short-term consumption of cocoa improves the lipid profile, exerts antiinflammatory effects, and protects against oxidative damage. Results of this study indicate that cocoa consumption can potentially improve IR and restore a healthy redox status.

Promising cellulolytic fungi isolates for rice straw degradation

Diana Catalina Pedraza-Zapata,Andrea Melissa Sánchez-Garibello,Balkys Quevedo-Hidalgo,Nubia Moreno-Sarmiento,Ivonne Gutiérrez-Rojas 한국미생물학회 2017 The journal of microbiology Vol.55 No.9

The objective of this study was to evaluate the potential of eight fungal isolates obtained from soils in rice crops for straw degradation in situ. From the initial eight isolates, Pleurotus ostreatus T1.1 and Penicillium sp. HC1 were selected for further characterization based on qualitative cellulolytic enzyme production and capacity to use rice straw as a sole carbon source. Subsequently, cellulolytic, xylanolytic, and lignolytic (Pleurotus ostreatus) activity on carboxymethyl cellulose, oat xylan, and rice straw with different nitrogen sources was evaluated. From the results obtained it was concluded both isolates are capable to produce enzymes necessary for rice straw degradation. However, their production is dependent upon carbon and nitrogen source. Last, it was established that Pleurotus ostreatus T1.1 and Penicillium sp. HC1 capability to colonize and mineralize rice straw, in mono-and co-culture, without affecting nitrogen soil content.

Hyperbaric oxygenation applied before or after mild or hard stress: effects on the redox state in the muscle tissue

Claudia Carolina Pérez-Castro,Alexandre Kormanovski,Gustavo Guevara-Balcázar,María del Carmen Castillo-Hernández,José Rubén García-Sánchez,Ivonne María Olivares-Corichi,Pedro López-Sánchez,Iván Rubio- 대한약리학회 2023 The Korean Journal of Physiology & Pharmacology Vol.27 No.1

The mechanism is unclear for the reported protective effect of hyperbaric oxygen preconditioning against oxidative stress in tissues, and the distinct effects of hyperbaric oxygen applied after stress. The trained mice were divided into three groups: the control, hyperbaric oxygenation preconditioning, and hyperbaric oxygenation applied after mild (fasting) or hard (prolonged exercise) stress. After preconditioning, we observed a decrease in basal levels of nitric oxide, tetrahydrobiopterin, and catalase despite the drastic increase in inducible and endothelial nitric oxide synthases. Moreover, the basal levels of glutathione, related enzymes, and nitrosative stress only increased in the preconditioning group. The control and preconditioning groups showed a similar mild stress response of the endothelial and neuronal nitric oxide synthases. At the same time, the activity of all nitric oxide synthase, glutathione (GSH) in muscle, declined in the experimental groups but increased in control during hard stress. The results suggested that hyperbaric oxygen preconditioning provoked uncoupling of nitric oxide synthases and the elevated levels of GSH in muscle during this study, while hyperbaric oxygen applied after stress showed a lower level of GSH but higher recovery post-exercise levels in the majority of antioxidant enzymes. We discuss the possible mechanisms of the redox response and the role of the nitric oxide in this process