Evaluation of a native oleaginous marine microalga Nannochloropsis oceanica for dual use in biodiesel production and aquaculture feed

Ashour, Mohamed; Elshobary, Mostafa E.; El-Shenody, Rania A.; Kamil, Abd El-Wahab; Abomohra, Abd El‐Fatah

doi:10.1016/j.biombioe.2018.12.009

Cited by 119 publications

(74 citation statements)

References 47 publications

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“…Growth evaluation, represented by biomass and algal biochemical analysis are two essential attributes to evaluate the prospective of a species as promising candidates for different applications (Arauĵo and Garcia, 2005;El-kassas et al, 2016) for Chorella spp. and their application in aquaculture feeding for N.oceanica (Ashour et al, 2019). In the present study, N.oceanica began their stationary phase of growth on the 10th day of incubation where achieved the maximum biomass value by fructose medium (A) followed by rumen liquor (RL) while the lowest biomass was obtained by lactose (B).…”

Section: Discussionmentioning

confidence: 61%

“…It was also close to El-Sheekh et al (2014) when used spirulina in the diet improving biochemical composition of red tilapia. More recent studies, Elkassas et al (2016); Ashour et al (2019) investigated that the development and survival of Artemia franciscana showed significant increases when fed on lipid extracted algae residuals. Such strategy is in accordance with our results which are supposed to be an important achievement and confirm that the residual algae biomass can be significantly used for aquaculture feeding.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, aquaculture technologies were developed rapidly to meet human demand as supplementation with dietary lipids or proteins (Ashour et al, 2019). They investigated also application of lipid-free algal biomass in enhancing Artemia development and survival for improving aquaculture (El-Kassas et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Utilization of Nannochloropsis oceanica alga for biodiesel production and the de-lipidated biomass for improving Red tilapia aquaculture

Abugrara¹,

El‐Sayed²,

Zaki³

et al. 2019

Egypt. J. of Aquatic Biolo. and Fish.

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This work was carried out, firstly for investigating the different effects of various organic carbon sources [fructose (A), lactose (B), glucose (C)], and nitrogen sources [poultry manure extract (PM) and rumen liquor (RL)] which used at ratio 50:50% F/2 medium on maximizing production of biodiesel from the marine microalga Nannochloropsis oceanica. Secondly, we apply the residual lipid-free biomass as feed additives in Red tilapia aquaculture. In phase1, the biomass (DW), biodiesel contents and biochemical compositions of N. oceanica were determined. The results showed varied biomass and biochemical analysis in DW bases between treatments. However, A was achieved significantly the maximum DW for the algal biomass and protein percentage, whereas lipid accumulation was the most in RL as well as achieving the highest biodiesel content. In phase 2, algal biomass by-product (lipid-free) from the superior treatments A and RL were applied at 4 rates (1,2,3 and 4) for concentrations 25,50,75&100%, respectively that substituting soybean for feeding red tilapia larvae as compared with control CO. The initial weight and length of the larvae were 0.32g and 1.9 cm, respectively continued for a duration of 30 days of the experiment. After the end of the experimental period , growth performance, survival percentage (SR%) and biochemical analysis were estimated. The results revealed that SR% was higher significantly for RL2 than A1 (93% & 90%) as compared to control (86.7%). Accordingly, red tilapia carcass attained maximum protein contents for diets A1 & RL2 in whereas lipid content was maximum in control. Finally, authors suggesting the use of Roman liquor as a novel treatment for cost-effective promoting biodiesel content and the remained biomass with 50% substitution of soybean in the diet (RL2)achieved also good results for improving red tilapia aquaculture.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

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Utilization of Nannochloropsis oceanica alga for biodiesel production and the de-lipidated biomass for improving Red tilapia aquaculture

Abugrara¹,

El‐Sayed²,

Zaki³

et al. 2019

Egypt. J. of Aquatic Biolo. and Fish.

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“…Many studies have reported that the constituents, diversity, and communities of marine algae are affected by variations in environmental parameters and nutrient limitation [65][66][67][68][69][70]. During the last few years, the attention on scientific and commercial interest to biotechnological applications of algae as a sustainable source and global commercial for aquaculture [71][72][73][74][75], biofuel [12,76], extracts [77,78], food supplement, pharmaceuticals, and cosmetics were increased [12].…”

Section: Discussionmentioning

confidence: 99%

Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow

et al. 2020

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We performed field experiments to evaluate the influence of two extraction treatments, seaweed (Pterocladia capillacea S.G. Gmelin) water extraction (WE) and ultrasound-assisted water extraction (USWE) at three concentrations (5%, 10%, and 15%), as well as control NPK traditional mineral fertilizer on the growth, yield, minerals, and antioxidants of Jew’s Mallow (Corchorus olitorius L.) during the two seasons of 2016 and 2017 in Egypt. Plant height, number of leaves, and fresh weight of WE10 treatment were the highest (p < 0.05) as 59.67 cm, 10.67 and 2.41 kg m−2 in 2016, respectively, and 57.33 cm, 11.00 and 2.32 kg m−2 in 2017, respectively. WE10 and USWE5 treatments produced the highest dry matter (17.07%) in 2016 and (16.97%) in 2017, respectively. WE10 plants had an increased water productivity of 41.2% relative to control plants in both seasons. The highest chlorophyll ‘a’ was recorded after the WE10 treatment in 2016 and 2017 (17.79 μg g−1 and 17.84 μg g−1, respectively). The highest levels of total antioxidant capacity, total phenolics, and total flavonoids were also recorded after the WE10 treatment. Application of WE10 boosted growth, yield, minerals, and antioxidants of Jew’s Mallow. The CROPWAT model was used to estimate the evapotranspiration, irrigation water requirements, and yield response to irrigation scheduling. Our data showed a yield reduction in the initial growth stage if a limited amount of water was provided. Therefore, irrigation water should be provided during the most important stages of crop development with the choice of effective irrigation practices to avoid water losses, as this helps to maximize yield.

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“…Plankton are considered very important bioindicator for the marine ecosystem and monitoring of the water quality. Many studies reported that the plankton (phyto and zoo) composition, distribution, diversity, and communities are affected by variations in environmental and nutritional conditions [2,6,[33][34][35][36][37][38][39][40][41][42][43].…”

Section: Discussionmentioning

confidence: 99%

Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf)

Abo-Taleb

Ashour

El-Shafei

et al. 2020

Water

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Little is known about the diversity of Calanoida, Copepoda, in different habitats of the north-western Red Sea. In this study, biodiversity of Calanoida, Copepoda, during the cold and warm seasons of 2017, were observed at 12 stations belonging to four different habitats (coral reef (CR), sheltered shallow lagoons (SSL), seagrass (SG), and open deep-water (ODW) habitats) in the Hurghada shelf, north-western Red Sea. SSL habitats were the most affected by environmental conditions, especially temperature, salinity, and depth. Some calanoid species were restricted to certain habitats, others were adapted to live in more than one habitat, while some species showed a wide distribution in all habitats. ODW habitats showed maximum diversity and density of the calanoid species. The effects of temperature and salinity were distinct in the SG and SSL. The results clearly showed that different Red Sea habitats affected the biodiversity of calanoid copepods.

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Evaluation of a native oleaginous marine microalga Nannochloropsis oceanica for dual use in biodiesel production and aquaculture feed

Cited by 119 publications

References 47 publications

Utilization of Nannochloropsis oceanica alga for biodiesel production and the de-lipidated biomass for improving Red tilapia aquaculture

Utilization of Nannochloropsis oceanica alga for biodiesel production and the de-lipidated biomass for improving Red tilapia aquaculture

Effect of Pterocladia capillacea Seaweed Extracts on Growth Parameters and Biochemical Constituents of Jew’s Mallow

Biodiversity of Calanoida Copepoda in Different Habitats of the North-Western Red Sea (Hurghada Shelf)

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