Estudio geomorfológico del Malpaís de la Rasca

El Malpaís de la Rasca constituye un conjunto de edificios basálticos del Cuaternario. Tuvo varias fases de formación, en las que se crearon seis edificios volcánicos de tamaño variable y un extenso malpaís. Este sector presenta unas características peculiares en relación con el resto de la costa sur de Tenerife. Mientras que la combinación de los factores naturales y antrópicos sobre los dominios costeros ha tenido una gran influencia en la creación del paisaje actual, el uso urbano restringido a la periferia del conjunto y la declaración del lugar como Reserva Natural Especial han propiciado una escasa trasformación de las formas de relieve originales, conservando las características de los volcanes Cuaternarios. En este trabajo se estudian los aspectos geomorfológicos, apoyados en datos morfométricos, petrográficos, geoquímicos y sedimentológicos.The volcanoes of Malpaís de la Rasca are set of quaternary basaltic extrusions. Their origins include several phases formation during which time six volcanoes, with different sizes were created together with a lava field. This sector represents peculiar features of that specific part of the South of Tenerife. The combination of natural and anthropological factors on the coastal domain has influenced the creation of the present landscape. Nevertheless, human contact has been restricted by declaring the area a Special Nature Reserve, limiting changes to the landscape to naturally- being preserved the original volcanic landscapes. This work focus on the Geomorphological aspect, based in field data with the support of morphometric, geochemistry, petrographical analysis and sedimentology

Análisis de los rayos registrados en Canarias en el periodo 2006-2015

En zonas dominadas por centros de altas presiones semipermanentes, como Canarias, el aire descendente, los bajos niveles de humedad por encima de la inversión térmica y la estratificación estable, inhiben las tormentas, pero no completamente. A partir de los rayos registrados en una amplia zona geográfica que engloba las islas Canarias y Madeira y el área oceánica circundante, se analiza la distribución espacial y temporal de los mismos, estimando su densidad y el número de días de tormenta en rejillas de resolución 0,1°, y comparando sus características con las de otras zonas geográficas similares. Seguidamente, se evalúa el comportamiento de algunos parámetros eléctricos de los rayos, como la intensidad, la polaridad y la multiplicidad. A continuación, se trazan algunos rasgos que, con una serie más dilatada, pueden llegar a adquirir rango climatológico. Finalmente, se conjeturan algunas de las claves del peculiar episodio de agosto de 2015

Nutritional and pro-health use of white mulberry (Morus alba L.)

Morwa biała jest drzewem wywodzącym się z krajów Dalekiego Wschodu, a w Polsce znana była jako pożywienie jedwabników. W warunkach polskich występuje głównie dziko jako ozdoba ogrodów i skwerów, w związku z dobrą odpornością na niskie temperatury. Wymagania glebowe drzewa morwowego są niewysokie, jednocześnie adaptując się łatwo do panujących warunków atmosferycznych. Dodatkowym atutem morwy białej jest wysoka wartość proekologiczna drzew i poprawa jakości gleb, poprzez zdolność utrzymywania optymalnego nawodnienia roślinności sąsiadującej. Niektóre elementy morwy wykazują cenne właściwości prozdrowotne i mają wysoki potencjał do zastosowania żywieniowego. W Polsce wykorzystanie morwy na szerszą skalę, jest jak dotąd małe, jednak rozwój plantacji zachowawczych m.in. jedwabnika oraz popularność alternatywnych form uprawy, może to zmienić.White mulberry is a tree native to the Far East and known as a food for silkworms, and in Poland it was known as silkworm food. In Poland, it occurs mainly in the wild, as an ornament of gardens and squares, due to its good resistance to low temperatures. eTh soil requirements of the mulberry tree are low and at the same time it adapts easily to the prevailing weather conditions. An additional advantage of white mulberry is the high pro-ecological value of trees and the improvement of soil quality through the ability to maintain optimal hydration of the neighboring vegetation. Some parts of mulberry show valuable pro-health properties, although their use in food production is small. In Poland, the use of mulberry on a larger scale has so far been small, however, the development of conservation plantations, incl. silkworm, and the popularity of alternative farming practices, could change that

The effect of the shredding degree of white mulberry leaves (Morus alba L.) On the antioxidant activity of intermediates

Liście morwy białej mają wysoki potencjał prozdrowotny, zwłaszcza dla diabetyków. Zabiegi przetwarzania tego surowca nie są jednak ujednolicone, co skutkuje dużym zróżnicowaniem jakościowym pomiędzy preparatami dostępnymi na rynku. Dokonano wyboru najlepszej formy liści morwy Morus alba odmiany Żółwińska Wielkolistna, pozwalającej na utrzymanie właściwości funkcjonalnych preparatów końcowych, na podstawie analizy ich aktywności przeciwutleniającej. Testom poddano liście ‘całe’, ‘grube’ (rozdrobnienie 50-70 mm x 10-20 mm) i ‘drobne’ (rozdrobnione 30-40 mm x 5-10 mm), które leżakowano (przez 1 lub 4 godziny) i suszono w temperaturze 30, 60 lub 90˚C. Jako najlepsze wskazano preparaty otrzy-mane z liści ‘grubo’ rozdrobnionych.White mulberry leaves have high pro-healthy potential, especially for diabetics. However, processing procedures of this plant are not standardized. It results in high differentiation between quality of products available on the market. In this paper the selection of the best form of Morus alba cv. Zolwinska Wielkolistna was made. Basing on the antioxidant tests, the health-promoting values of the final preparations, was made. Whole leaves, 'coarse' (50-70 mm x 10-20 mm crushed) leaves and 'fine' (30-40 mm x 5-10 mm crushed) leaves were tested, after further aging (for 1 or 4 hours) and drying (at 30˚C, 60˚C or 90˚C) processes. The preparations obtained from 'coarsely' shredded Morus alba leaves were indicated as the best

Some Common Medicinal Plants with Antidiabetic Activity, Known and Available in Europe (A Mini-Review)

Diabetes is a metabolic disease that affected 9.3% of adults worldwide in 2019. Its co-occurrence is suspected to increase mortality from COVID-19. The treatment of diabetes is mainly based on the long-term use of pharmacological agents, often expensive and causing unpleasant side effects. There is an alarming increase in the number of pharmaceuticals taken in Europe. The aim of this paper is to concisely collect information concerning the few antidiabetic or hypoglycaemic raw plant materials that are present in the consciousness of Europeans and relatively easily accessible to them on the market and sometimes even grown on European plantations. The following raw materials are discussed in this mini-review: Morus alba L., Cinnamomum zeylanicum J.Presl, Trigonella foenum-graecum L., Phaseolus vulgaris L., Zingiber officinale Rosc., and Panax ginseng C.A.Meyer in terms of scientifically tested antidiabetic activity and the presence of characteristic biologically active compounds and their specific properties, including antioxidant properties. The characteristics of these raw materials are based on in vitro as well as in vivo studies: on animals and in clinical studies. In addition, for each plant, the possibility to use certain morphological elements in the light of EFSA legislation is given

<span style="font-size:11.0pt; font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US; mso-bidi-language:HI;mso-bidi-font-weight:bold" lang="EN-GB">Antioxidant properties of <i>paratha</i> type flat bread enriched with white mulberry leaf extract</span>

237-244<span style="font-size:11.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-bidi-font-family:="" mangal;mso-ansi-language:en-gb;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-GB">The pace of modern life promotes the occurrence of diseases of affluence. Functional food may be useful in the prevention of different diseases and is becoming an alternative to food products available on the market. Far East Medicine as well as Indians had used white mulberry leaves as important source of biocompounds. Nowadays people ought to remember about this plant and try to use it in every-day diet. Bread is an essential element of the meals in middle Europe, however flat bread is not widespread in this part of the world. The design and properties of flat bread enriched with mulberry leaves were the overriding objectives in the study. The centuries-old use of mulberry leaves in alternative medicine suggested a potential positive outcome. In designed five variants of paratha the stability and content of polyphenols after thermal process and antioxidant properties were tested. It was showed that extract obtained on a semi-technical scale is rich in polyphenols which results in antioxidant activity of final functional food product-paratha. The addition of the extract significantly increased the health-promoting qualities of paratha and makes bread be desired by the consumers.</span

Pumpkin, Cauliflower and Broccoli as New Carriers of Thiamine Compounds for Food Fortification

The aim of the study is to explore the possibility of vegetables being used as carriers of thiamine. The influence of carrier type (thiamine hydrochloride—TCh and thiamine pyrophosphate—TP) for the thiamine stability were investigated. Two varieties of pumpkin, Muscat and Hokkaido, as well as Cauliflower and Broccoli, were used as a matrix for the thiamine applied. The impregnated and freeze-dried vegetables were stored (230 days) with changing access to light (access to and restriction of light) and temperature (21 °C and 40 °C). The analyzed carriers were also used in the production of gnocchi dumplings. The content of thiamine was analyzed using the thiochromium method. In the study, consumer tests (n = 199) and sensory profiling were used to assess the impact of thiamine carriers on the sensory quality of gnocchi dumplings. It was found that the introduction of dried vegetables at the level of 30% allows for high sensory desirability of analyzed products, as well as suggesting the possibility of their frequent consumption. Such a product could potentially become an alternative to pork meat as a good source of thiamine. However, it should be noted that the thiamine losses may occur during the storage of dried vegetables and their culinary preparation

Ambient noise tomography of El Hierro island (Canary Islands)

El Hierro island is one of the most active islands in the Canary Islands from a volcanological point of view. This is the reason why the imaging of the internal crustal structure is of huge importance. The geophysical exploration methods employed on El Hierro Island, such as gravimetry and seismic tomography, allowed obtaining the high-resolution characterization of the crust’s deep part. However, these methods did not yield significant information about the surface and the shallower part of the crust. To gain a deeper insight into the shallow geological structure of El Hierro island, we employed Ambient Noise Tomography to construct a 3D S-wave velocity model. Our investigation revealed the presence of seven significant seismic velocity anomalies, partly identified by previous studies. We identified two high-velocity anomalies located in the eastern and western parts of the island at a depth between 0 and 3 km below sea level (b.s.l.). We interpreted these anomalies as dense intrusive complexes of dikes, possibly linked to the Tanganasoga volcano and the formation of the Tiñor edifice. Additionally, we observed two high-velocity anomalies in the northern and southern parts of the island at a depth between 3 and 4 km b.s.l., which we related to the accumulation of solidified igneous rocks. On the other hand, a low-velocity anomaly was observed in the Golfo valley, between 0 and 0.5 km b.s.l., and we interpreted it as megalandslide deposits. This anomaly was evidenced for the first time in the present study. Finally, two lowvelocity anomalies were observed in the southern part of the island at different depths, between 0–0.5 km b.s.l. and 0–2 km b.s.l. These were interpreted as fractures generated by Quaternary volcanism along the SSE Rift. Also, one of them was evidenced for the first time in this study, corresponding to the zone of the fractures produced during the Quaternary volcanism. This study has allowed us to gain a more detailed understanding of the shallow geological structure of the island. Even if most of the anomalies had been evidenced previously, we could observe the existence of two low-velocity zones in the shallow crust that have not been observed before.Project VOLRISKMAC II (MAC2/3.5b/328)Cabildo Insular de Tenerife (TFassistance

The Genoprotective Role of Naringin

Since ancient times, fruits and edible plants have played a special role in the human diet for enhancing health and maintaining youthfulness. The aim of our work was to determine the interactions between naringin, a natural ingredient of grapefruits, and DNA using an electrochemical biosensor. Electrochemical methods allow analyzing the damages occurring in the structure of nucleic acids and their interactions with xenobiotics. Our study showed that the changes in the location of electrochemical signals and their intensity resulted from the structural alterations in DNA. The signal of adenine was affected at lower concentrations of naringin, but the signal of guanine was unaffected in the same condition. The dynamics of changes occurring in the peak height and surface of adenine related to naringin concentration was also significantly lower. The complete binding of all adenine bases present in the tested double-stranded DNA solution was observed at naringin concentrations ranging from 8.5 to 10.0 &micro;M. At larger concentrations, this active compound exerted an oxidizing effect on DNA. However, the critical concentrations of naringin were found to be more than twice as high as the dose absorbable in an average human (4 &micro;M). The results of our work might be helpful in the construction of electrochemical sensors for testing the content of polyphenols and would allow determining their genoprotective functionality