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Samah R Khalil, Walaa M Elhady, Yaser H A Elewa, Noura E Abd El-Hameed, Sozan A Ali
Environmental pollutants, particularly metallic elements, mobilized and released into the environment, eventually accumulate in the food chain and thus pose a serious threat to human and animal health. In the present study, the role of Arthrospira (Spirulina platensis; SP) as a protector against oxidative stress-mediated liver damage induced by an exposure to lead acetate (LA; as a metallic pollutant) was assessed. To achieve this aim, rats were orally administered with 300 mg/kg bw SP for 15 days, before and concurrently with an intraperitoneal injection of 50 mg/kg bw LA (6 injections throughout 15 days)...
November 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Mina Salehi, Ahmad Moieni, Naser Safaie
Paclitaxel is a powerful antimitotic agent with excellent activity against a range of cancers. Hazel has been described as a paclitaxel-producing species among angiosperms. Fast-growing callus is a prerequisite for the success of callus production and then paclitaxel production. Therefore, optimizing the medium culture for enhancing callus growth is a crucial step for paclitaxel production. In this research, Murashige and Skoog (1962) (MS) medium was optimized for improving callus growth of hazel (Corylus avellana L...
November 15, 2017: Scientific Reports
Eun-Jeong Koh, Kui-Jin Kim, Ji-Hyeon Song, Jia Choi, Hyeon Yong Lee, Do-Hyung Kang, Ho Jin Heo, Boo-Yong Lee
Spirulina maxima, a microalga containing high levels of protein and many polyphenols, including chlorophyll a and C-phycocyanin, has antioxidant and anti-inflammatory therapeutic effects. However, the mechanisms where by Spirulina maxima ameliorates cognitive disorders induced by amyloid-β 1-42 (Aβ1-42) are not fully understood. In this study, we investigated whether a 70% ethanol extract of Spirulina maxima (SM70EE) ameliorated cognitive impairments induced by an intracerebroventricular injection of Aβ1-42 in mice...
November 13, 2017: International Journal of Molecular Sciences
Manal M A Mahmoud, Maather M M El-Lamie, Omnia E Kilany, Amina A Dessouki
One hundred and eighty Nile tilapia fish were used in eighty-three-day growth trial. Fish were divided into three treatment groups. The first group T0 was given the basal diet without any supplementation and served as the control group. The second group T1 was given the basal diet supplemented by 1% Spirulina. The third group T2 was given the basal diet supplemented by 2% Spirulina. At the end of the growth performance trial, a challenge trial was conducted using virulent strain of Pseudomonas fluorescens. Clinical signs, mortalities, postmortem lesions and histopathological alterations were recorded...
November 5, 2017: Fish & Shellfish Immunology
Manel Gargouri, Houda Hamed, Amel Akrouti, Xavier Dauvergne, Christian Magné, Abdelfattah El Feki
Chronic hyperglycemia in diabetes causes free radicals overproduction, which contributes to the development of diabetic nephropathy. In modern medicine, no satisfactory therapy is available to cure diabetes mellitus. In that context, we investigated the potential therapeutic action of spirulina-enriched diet on renal impairment and oxidative stress in diabetic rats. Diabetes was induced by a single subcutaneous injection of alloxan (120 mg kg-1) in rats. Following alloxan treatment, male Wistar rats were fed daily with 5% spirulina-enriched diet or treated with insulin (0...
November 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Júlio Cesar de Carvalho, Ivo Alberto Borghetti, Liliana Carrilo Cartas, Adenise Lorenci Woiciechowski, Vanete Thomaz Soccol, Carlos Ricardo Soccol
Cassava, the 5th most important staple crop, generates at least 600L of wastewater per ton of processed root. This residue, cassava processing wastewater (CPW) has a high chemical oxygen demand, that can reach 56 g/L, and has also high concentrations of several mineral nutrients. The cultivation of microalgae such as Chlorella, Spirulina and wild strains was evaluated in the last years in raw, minimally processed and partially digested CPW. Concentrations of 2-4 g/L of these microalgae, comparable to those obtained in synthetic media, could be reached...
October 4, 2017: Bioresource Technology
Jun Cheng, Wangbiao Guo, Chengyi Cai, Qing Ye, Junhu Zhou
Alternatively permutated conic (APC) baffles were proposed to generate vertical and horizontal vortex flow to intensify mixing and mass transfer in a raceway pond. Both clockwise vortexes were generated before and after conic baffles in the main stream to increase perpendicular velocity by 40.3% and vorticity magnitude by 1.7 times on vertical cross section. Self-rotary flow around conic baffles and vortex flow among conic baffles were generated to increase perpendicular velocity by 80.4% and vorticity magnitude by 4...
October 10, 2017: Bioresource Technology
Kricelle Mosquera Deamici, Lucielen Oliveira Santos, Jorge Alberto Vieira Costa
This study aimed at evaluating whether a magnetic field (MF) affects the growth of Spirulina sp. when applied to it at different exposure times in indoor and outdoor culture systems. The effects of MF on chlorophyll content, medium consumption and protein profile were also investigated. In raceway tanks, a 25 mT MF was applied for 24 h or for 1 h d(-1). MF for 24 h to outdoor assays increased biomass concentration and chlorophyll-a content besides altering the protein profile. Outdoor Spirulina growth was higher (∼3...
September 28, 2017: Bioresource Technology
Apurva Gupta, Devendra Mohan, Rishi Kumar Saxena, Surendra Singh
Commercial cultivation of Spirulina sp. is highly popular due to the presence of high amount of C-phycocyanin (C-PC) and other valuable chemicals like carotenoids and γ-linolenic acid. In this study, the pH and the concentrations of nitrogen and carbon source were manipulated to achieve improved cell growth and C-PC production in NaCl-tolerant mutant of Spirulina platensis. In this study, highest C-PC (147 mg · L(-1) ) and biomass (2.83 g · L(-1) ) production was achieved when a NaCl-tolerant mutant of S...
October 13, 2017: Journal of Phycology
Aiguo Luo, Jia Feng, Bianfang Hu, Junping Lv, C-Y Oliver Chen, Shulian Xie
This study examined the effect of Spirulina platensis polysaccharides (SPP) at 0.1%, 0.25%, and 0.5% (wt/wt) of Chinese-style sausages on lipid peroxidation, microbiological and sensory properties during 24 d stored at 4 °C. During the storage, pH, lightness (L(*) ) values, DPPH radical scavenging activity and sensory scores decreased with time and TBARS, TVB-N, mesophilic, and psychrotrophic total viable counts increased. However, the magnitude of the changes was attenuated with the addition of SPP as compared to control...
October 12, 2017: Journal of Food Science
Noelia Castillejo, Ginés Benito Martínez Hernández, Valentina Goffi, Perla A Gómez, Encarna Aguayo, Francisco Artés, Francisco Artés Hernández
BACKGROUND: Some algae are an excellent source of vitamin B12, of special interest for vegetarian/vegan consumers, and of fucose to supplement fruit and vegetables beverages like smoothies. Nevertheless, the algae supplementation of smoothies may lead to possible quality changes during smoothie shelf life that needs to be studied. Therefore, the quality changes of fresh green smoothies supplemented (2.2%) with 9 edible algae (sea lettuce, kombu, wakame, thongweed, dulse, Irish moss, nori, spirulina and chlorella) were studied throughout 24 days at 5°C...
October 11, 2017: Journal of the Science of Food and Agriculture
Qian Lu, Hui Liu, Wen Liu, Yuming Zhong, Caibing Ming, Wei Qian, Qin Wang, Jianliang Liu
Due to the low concentration of nitrate and high contents of organics, brewery effluent was not suitable for the cultivation of Spirulina sp. This work changed the nutrient profile of brewery effluent effectively by dilution, addition of nitrate, and anaerobic digestion. The result showed that the optimum dilution rate and NaNO3 addition for brewery effluent were 20% and 0.5 g/L, respectively. Spirulina sp. grown in pretreated brewery effluent produced 1.562 mg/L biomass and reduced concentrations of nutrients to reach the permissible dischargeable limits...
October 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Veronika Hynstova, Dagmar Sterbova, Borivoj Klejdus, Josef Hedbavny, Dalibor Huska, Vojtech Adam
In this study, 14 commercial products (dietary supplements) containing alga Chlorella vulgaris and cyanobacteria Spirulina platensis, originated from China and Japan, were analysed. UV-vis spectrophotometric method was applied for rapid determination of chlorophylls, carotenoids and pheophytins; as degradation products of chlorophylls. High Performance Thin-Layer Chromatography (HPTLC) was used for effective separation of these compounds, and also Atomic Absorption Spectrometry for determination of heavy metals as indicator of environmental pollution...
September 22, 2017: Journal of Pharmaceutical and Biomedical Analysis
Jingwen Ye, Jun Li, Zhigang Li, Shichou Han
Mallada basalis (Walker) has the potential to be a valuable biological control agent because of its predatory abilities, strong reproductive capacity, and broad prey range. This study aimed to improve on a previously used artificial diet for M. basalis, to achieve a longer oviposition period and greater survival rate and fecundity. We analyzed the development, survival, longevity, and reproduction of M. basalis (F1 and F2 generations) fed two artificial diets (AD1 and AD2). Both diets contained chicken egg yolk, beer yeast powder, honey, trehalose, seawater spirulina, and potassium sorbate...
2017: PloS One
Cesar Alejandro Zamora Barrios, S Nandini, S S S Sarma
Unlike temperate regions, tropical ecosystems are characterized by high temperatures (>18 °C) all year, promoting blooms of cyanobacteria which often produce secondary metabolites toxic to zooplankton. Nabor Carillo and the Recreational Lake are part of the saline, Lake Texcoco, in Central Mexico which is filled nowadays with treated waste water. Both water bodies are dominated by Planktothrix, Anabaenopsis, Spirulina and Microcystis. In this study we present the concentration of microcystins in these waterbodies over an annual cycle...
December 1, 2017: Toxicon: Official Journal of the International Society on Toxinology
Feng Huang, Arash Tahmasebi, Kristina Maliutina, Jianglong Yu
The formation of nitrogen-containing compounds in bio-oil during microwave pyrolysis of Chlorella and Spirulina microalgae has been investigated in this study. Activated carbon (AC) and magnetite (Fe3O4) were used as microwave receptors during microwave pyrolysis experiments. It has been found that the use of Fe3O4 increased the total yield of bio-oil. The use of different microwave receptors did not seem to have affected the total yield of nitrogen-containing compounds in the bio-oil. However, Fe3O4 promoted the formation of nitrogen-containing aliphatics, thereby reducing the formation of nitrogen-containing aromatics...
December 2017: Bioresource Technology
Jiahui Zheng, Jingyue Wang, Huanglei Pan, Hongli Wu, Difeng Ren, Jun Lu
The aim of the present study was to investigate the antihypertensive effects of the bioactive Spirulina platensis peptides Ile‑Gln‑Pro (IQP), Val‑Glu‑Pro (VEP), as well as Spirulina platensis hydrolysates (SH), and assessed whether the synthesis of components of the myocardial and renal local renin angiotensin system (RAS) are regulated differentially in spontaneously hypertensive rats (SHR). The SHR were administrated with IQP, VEP and SH respectively (10 mg/kg/day) for 6 weeks and received continuous monitoring of blood pressure (BP) for two more weeks...
December 2017: Molecular Medicine Reports
Trang Q To, Kerryn Procter, Blake A Simmons, Suresh Subashchandrabose, Rob Atkin
Biomass based biofuels are already an important energy source, and will increasingly be so in the future as the need for renewable energy rises. Due to their fast multiplication rates, algae can provide a sustainable supply of biomass, and are attractive because they do not compete with food crops for habitat. Here we show that biomass derived from Chlorella vulgaris and Spirulina platensis can be pretreated with low cost choline amino acid based ionic liquids to effectively yield lipids (30.6% and 51% total lipids) and sugars (71% and 26% total sugars)...
September 22, 2017: Faraday Discussions
Mahammed Ilyas Khazi, Zeliha Demirel, Meltem Conk Dalay
Response surface methodology (RSM) based on the 2(3) factorial central composite design (CCD) was employed to evaluate optimum culture conditions (temperature, light irradiance and agitation) to enhance biomass and phycocyanin content of Spirulina platensis. The predicted maximum biomass and phycocyanin content by RSM was 1.06 g L(-1) and 107 mg L(-1), respectively, whereas maximum biomass and phycocyanin content of 1.32 g L(-1) and 127 mg L(-1) was obtained in the validation experiments under optimized conditions after 10 days of cultivation...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
Jody L Heerema, Caren C Helbing, Greg G Pyle
Olfaction is an important sense for aquatic organisms because it provides information about their surroundings, including nearby food, mates, and predators. Electro-olfactography (EOG) is an electrophysiological technique that measures the response of olfactory tissue to olfactory stimuli, and responses are indicative of olfactory acuity. Previous studies have used this technique on a variety of species including frogs, salamanders, daphniids and, most extensively, fish. In the present study, we introduce a novel modified EOG method for use on Lithobates (Rana) catesbeiana tadpoles...
January 2018: Ecotoxicology and Environmental Safety
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