Phenolic composition of the edible parts (flesh and skin) of Bordô grape (Vitis labrusca) using HPLC-DAD-ESI-MS/MS     

Lago-Vanzela ES  Da-Silva R  Gomes E  García-Romero E  Hermosín-Gutiérrez I 《Journal of agricultural and food chemistry》2011,59(24):13136-13146

The aim of this study was the detailed characterization of the phenolic composition and the determination of the antioxidant activity of the Bord? grape (Vitis labrusca) cultivated in South Brazil. The edible parts of Bord? grapes (flesh and skin) contained 1130 mg/kg of total phenolic compounds (as gallic acid), mainly located in the skins. Anthocyanin content in the skins was high, largely as 3,5-diglucosides (1359 mg/kg, as malvidin 3,5-diglucoside). Total flavonols accounted for 154 μmol/kg, mainly located in the skins and with myricetin 3-glucoside as the principal flavonol in both grape parts. Very low amounts of flavan-3-ol monomers and dimers and low amounts of polymeric proanthocyanidins, with a composition similar to that reported for V. vinifera grape varieties, were found in Bord? grape skins. Hydroxycinnamic acid derivatives mainly derived from caffeic acid and were found in the skins in high amounts, ten times higher than in the flesh (total amount: 483 μmol/kg). Finally, the Bord? grape cultivar can be considered a high resveratrol producer (10.91 mg/kg) and also exhibited a high value of total antioxidant capacity (37.6 ± 1.0 mmol/kg, as Trolox).  相似文献   

Biopsy wound healing in long-finned pilot whales (Globicephala melas)     

Giménez J  De Stephanis R  Gauffier P  Esteban R  Verborgh P 《The Veterinary record》2011,168(4):101b

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Soil erosion modelling of burned and mulched soils following a Mediterranean forest wildfire     

Javier Gonzalez-Romero  Demetrio Antonio Zema  Bruno Gianmarco Carrà  Jonay Neris  Alvaro Fajardo  Pedro Antonio Plaza-Álvarez  Daniel Moya  Esther Peña-Molina  Jorge de las Heras  Manuel Esteban Lucas-Borja 《Soil Use and Management》2023,39(2):881-899

Soil erosion modelling applied to burned forests in different global regions can be unreliable because of a lack of verification data. Here, we evaluated the following three erosion models: (1) Water Erosion Prediction Project (WEPP), (2) Morgan-Morgan-Finney (MMF) and (3) Universal Soil Loss Equation-Modified (USLE-M). Using field plots that were either untreated or mulched with straw, this study involved observations of soil loss at the event scale at a burned pine forest in Central Eastern Spain. The erosion predictions of the three models were analysed for goodness-of-fit. Optimization of the MMF model with a new procedure to estimate the C-factor resulted in a satisfactory erosion prediction capacity in burned plots with or without the mulching treatment. The WEPP model underestimated erosion in the unburned areas and largely overestimated the soil loss in burned areas. The accuracy of soil loss estimation by the USLE-M model was also poor. Calibration of the curve numbers and C-factors did not improve the USLE-M model estimation. Therefore, we conclude that an optimized MMF model was the most accurate way to estimate soil loss and recommend this approach for in Mediterranean burned forests with or without postfire mulching. This study gives land managers insight about the choice of the most suitable model for erosion predictions in burned forests.  相似文献   

DETERMINATION OF FOLIAR SAMPLING CONDITIONS AND STANDARD LEAF NUTRIENT LEVELS TO ASSESS MINERAL STATUS OF LOQUAT TREE     

Ana Quiñones  Esteban Soler  Francisco Legaz 《Journal of plant nutrition》2013,36(2):284-298

Loquat [Eriobotrya japonica (Thunb.) Lindl.] is a minor fruit-tree species which is grown commercially in the Mediterranean region. Given the current increase in loquat cultivation, there is a need to define basic crop-management procedures in order to obtain high yields and optimal fruit quality. The aim of this work was to develop a routine for loquat farmers to follow, in order to know the nutritional status of trees in order to establish a rational fertilization regime, and to correct nutrient deficiencies as soon as possible. This paper reports three experiments aimed at establishing: 1) leaf type, 2) time of leaf sampling and 3) the standard leaf nutrient levels as a function of maximum yield. Results indicate that the summer flush leaves could be the most representative of nutritional status. Thus, the most appropriate time to sample leaves for analysis is in summer (beginning of August to the end of September), taking mature 3–4 month old leaves.  相似文献   

Diverse phytoplasmas associated with maize bushy stunt disease in Peru     

Gamarra  Delia Gamarra  Villar  Charo Milagros  Suarez  Gilberto Torres  Esteban  Walter Darlyn Ingaruca  Contaldo  Nicoletta  Lozano  Emerson Clovis Carrasco  Bertaccini  Assunta 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(1):223-235

European Journal of Plant Pathology - Corn plants showing symptoms of midribs chlorosis, and leaf reddening, short internodes, ear proliferation, and plant growth reduction were collected in Peru...  相似文献   

Hypocobalaminaemia in dogs with acute gastrointestinal diseases     

C. Mattavelli  A. Willems  E. Gomez Soto  S. K. Chong 《The Journal of small animal practice》2024,65(2):104-112

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Simulated nitrogen deposition affects soil fauna from a semiarid Mediterranean ecosystem in central Spain   总被引：1，自引：0，他引：1  

Raúl Ochoa-Hueso  Iluminada Rocha  Carly J. Stevens  Esteban Manrique  María José Luciañez 《Biology and Fertility of Soils》2014,50(1):191-196

Nitrogen (N) deposition is a major threat to the semiarid Mediterranean ecosystems. We simulated a gradient of N deposition (0, 10, 20 and 50 kg N ha^?1 year^?1?+?6.4 kg N ha^?1 year^?1 ambient deposition) in a Mediterranean shrubland from central Spain. In autumn 2011 (after 4 years of experimental duration), soil cores were taken to extract the soil fauna. Acari (45.54%) and Collembola (44.00%) were the most represented taxonomical groups, and their abundance was negatively related to soil pH. Simulated N deposition had an impact on the total number of individuals in soil as well as on Collembola and Pauropoda abundance. Collembola abundance increased with N loads up to 20 kg N ha^-1 year^-1 and then decreased. This response was attributed to soil acidification (between 0 and 20 kg N ha^-1 year^-1) and increased soil ammonium (between 20 and 50 kg N ha^-1 year^-1). Pauropoda were favoured by additions of 50 kg N ha^-1 year^-1, and it was the only taxonomical group whose abundance was exclusively related to N deposition, suggesting their potential as bioindicators. Contrary to predictions, there was a negative relationship between soil faunal abundance and plant diversity. In conclusion, soil faunal communities from semiarid Mediterranean ecosystems in central Spain seem to be primarily influenced by soil chemistry (mainly pH) but are also susceptible to increased N deposition. The main drivers of change under increased N deposition scenarios seem to be soil acidification and increased ammonium in soils where nitrate is the dominant mineral N form.  相似文献   

Dynamics of violaxanthin and lutein epoxide xanthophyll cycles in Lauraceae tree species under field conditions     

Esteban R  Jiménez ET  Jiménez MS  Morales D  Hormaetxe K  Becerril JM  García-Plazaola JI 《Tree physiology》2007,27(10):1407-1414

Two xanthophyll cycles have been described in higher plants: the violaxanthin xanthophyll (V or VAZ) cycle, which is present in all species, and the taxonomically restricted lutein epoxide xanthophyll (Lx) cycle, which involves the light-induced de-epoxidation of Lx to lutein (L) and its epoxidation back to Lx in low light. Laboratory experiments indicate that the first reaction occurs quickly, but the second reaction is much slower. We investigated the Lx cycle under field conditions in several tree species of the Lauraceae family to determine its relationship with the ubiquitous V cycle. The field study was conducted in two natural laurel forests: one in the Canary Islands, where Laurus azorica (Seub.) Franco, Ocotea foetens (Aiton.) Benth, Apollonias barbujana (Cav.) Bornm. and Persea indica (L.) Spreng were studied; and one in the Basque Atlantic coast where Laurus nobilis L. was studied. The results were complemented by a taxonomic study. The presence of Lx was widespread among Lauraceae species, but its concentration varied even among closely related species. The V pool size correlated positively with growth irradiance, whereas the relationship between Lx pool size and growth irradiance varied with species. A functional Lx cycle was confirmed under field conditions only in O. foetens and L. nobilis. Furthermore, in O. foetens, a correlation between Lx de-epoxidation and photoinhibition suggested a protective role for this cycle. We conclude that, unlike the V cycle, which is normally correlated with irradiance, the operation and light dependence of the Lx cycle is species-dependent.  相似文献   

Cover Image     

Katherinne Valderrama  Manuel Soto‐Dvila  Cristopher Segovia  Ignacio Vsquez  My Dang  Javier Santander 《Journal of fish diseases》2019,42(11):i-i

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Nutritional planning for Nellore heifers post-weaning to conception at 15 months of age: performance and nutritional,metabolic, and reproductive responses     

de Almeida  Daniel Mageste  Marcondes  Marcos Inácio  Rennó  Luciana Navajas  Pereira Silva  Luiz Henrique  Martins  Leandro Soares  Marquez  David Esteban Contreras  Castaño Villadiego  Faider Alberto  Velez Saldarriaga  Felipe  Franco  Julian David Castaño  Moreno  Deilen Paff Sotelo  de Moura  Felipe Henrique  Paulino  Mário Fonseca 《Tropical animal health and production》2019,51(1):79-87

Tropical Animal Health and Production - The objective of this study was to evaluate the effects of strategic supplementation in the dry period and dry/rainy transition period on the performance and...  相似文献