The suitability of Ulva fasciata, Ulva compressa, and Hypnea musciformis for production in an outdoor spray cultivation system, with respect to biomass yield and protein content

O presente estudo pretende comparar a distribuição vertical da comunidade bêntica na zona entremarés em dois locais compostos por matacões graníticos caracterizados por hidrodinâmica distinta, reflexo da diferença na orientação dos molhes nas praias do Farol de São Tomé (Píer) e na Barra do Furado (Barra), norte do Estado do Rio de Janeiro. Quadrados de 400 cm² foram sobrepostos ao longo de três perfis verticais de ambos os sítios e amostrados através do método de fotoquadrats, desde o nível 0,2 m da maré até o limite superior de Littorina spp. O limite superior dos organismos marinhos foi ampliado na Barra (3,8 m) em relação ao Píer (2,2 m). Quanto à composição taxonômica, nove espécies foram comuns. Chaetomorpha sp., Chondracanthus teedii (Mertens ex Roth) Fredericq e Grateloupia sp. foram exclusivas na Barra, enquanto Tetraclita stalactifera (Lamarck, 1818), Fissurella clench, Gracilaria domingensis (Kützing) Sonder ex Dickie e Hypnea musciformis (Wulfen in Jacqu.) Lamouroux ocorreram somente no Píer. Em ambos os locais, a riqueza e a diversidade de espécies foram superiores nos quadrados intermediários. Os maiores valores foram registrados na Barra. As maiores diferenças nos agrupamentos entre faixas equivalentes de locais distintos ocorreram na faixa eulitorânea superior, seguida pela faixa eulitorânea inferior e franja sublitorânea. Apenas a orla litorânea não revelou diferença significativa entre os locais, mas uma maior extensão desta franja e da faixa eulitorânea superior era bastante evidente. As demais faixas na Barra do Furado foram caracterizadas em grande parte por espécies típicas de ambientes mais expostos como Chaetomorpha sp. na faixa eulitorânea superior e Perna perna (Linnaeus, 1758) na eulitorânea inferior, além de C. teedii e Ulva fasciata Delile, 1813 na franja sublitorânea. No Píer, as diferentes faixas apresentavam distribuição eqüitativa, refletindo um ambiente menos estressante. As diferenças observadas na distribuição vertical dos organismos bênticos, principalmente na extensão das faixas superiores, evidenciam condições de exposição a ondas variáveis.

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Effect of polyculture cultivation system and addition of abscisic acid (ABA) on enhancement of starch and protein content from duckweeds

10.1063/1.5115630 ◽

2019 ◽

Author(s):

Anca Awal Sembada ◽

Ahmad Faizal

Keyword(s):

Abscisic Acid ◽

Protein Content ◽

Cultivation System

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Effect of seeding methods and hatchery periods on sea cultivation of Saccharina latissima (Phaeophyceae): a Norwegian case study

Journal of Applied Phycology ◽

10.1007/s10811-019-01936-0 ◽

2019 ◽

Vol 32 (4) ◽

pp. 2201-2212 ◽

Cited By ~ 4

Author(s):

Silje Forbord ◽

Kristine B. Steinhovden ◽

Torfinn Solvang ◽

Aleksander Handå ◽

Jorunn Skjermo

Keyword(s):

Quality Control ◽

Protein Content ◽

Biomass Yield ◽

Production Method ◽

Saccharina Latissima ◽

Seedling Production ◽

Direct Seeded ◽

Near Future ◽

Frond Length

Abstract To reach the goal of an industrialised macroalgae industry in Norway and other high-cost countries in the near future, a standardised seedling production method to improve quality control and predictability of cultivated biomass is essential. A total of 11 different treatments for seeding twine or rope with meiospores, gametophytes or juvenile sporophytes from the kelp Saccharina latissima were measured for growth (frond length, frond area, biomass yield and density) and protein content after 80 and 120 days at sea. Meiospore- and gametophyte-seeded twines were pre-cultivated in the hatchery for 14–42 days prior to deployment, while juvenile sporophytes of different ages were seeded on ropes directly on the day of deployment using a commercial binder to attach the seedlings. The results showed that seeding with meiospores pre-cultivated in the hatchery for 42 days (S42) before deployment gave significantly longer fronds (77.0 ± 6.7 cm) and a higher biomass yield (7.2 ± 0.1 kg m−1) at sea compared to other treatments. The poorest growth was measured for the direct-seeded sporophytes pre-cultivated in free-floating cultures for 35 days prior to deployment (D35; 34.4 ± 2.4 cm frond length and 1.6 ± 0.4 kg m−1). Image analysis was used to measure the coverage of the twine substrate before deployment, and a correlation was found between substrate coverage and frond length at sea, indicating that this can be used as a tool for quantity and quality control during the hatchery phase and before deployment. The protein content did not reveal any large differences between the treatments after 120 days of cultivation.

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Land-based drip-irrigated culture of Ulva compressa: The effect of culture platform design and nutrient concentration on biomass production and protein content

PLoS ONE ◽

10.1371/journal.pone.0199287 ◽

2018 ◽

Vol 13 (6) ◽

pp. e0199287 ◽

Cited By ~ 1

Author(s):

Wilson Mendoza ◽

Dominick Mendola ◽

Jang Kim ◽

Charles Yarish ◽

Alyssa Velloze ◽

...

Keyword(s):

Protein Content ◽

Biomass Production ◽

Nutrient Concentration ◽

Platform Design ◽

Ulva Compressa

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Cultivation of an Arthrospira platensis with digested piggery wastewater

Water Science & Technology ◽

10.2166/wst.2015.353 ◽

2015 ◽

Vol 72 (10) ◽

pp. 1774-1779 ◽

Cited By ~ 1

Author(s):

Rui Liu ◽

Qingqing Guo ◽

Wei Zheng ◽

Lüjun Chen ◽

Jinfei Luo

Keyword(s):

Protein Content ◽

Crude Protein ◽

Biomass Yield ◽

Nitrate Nitrogen ◽

Animal Feed ◽

Continuous Cultivation ◽

Arthrospira Platensis ◽

Ammonium Nitrogen ◽

Piggery Wastewater ◽

Digested Piggery Wastewater

An Arthrospira platensis strain ZJWST-S1 was isolated in Jiaxing City, China, which proved able to proliferate quickly in undiluted digested piggery wastewater (DPW), and the protein content in the algal biomass was high. Single factor experiments showed that the strain was able to quickly grow in a Zarrouk medium as the dosage of sodium bicarbonate, nitrate-nitrogen and phosphate-phosphorus was not less than 4.0 mg·L–1, 40 mg·L–1 and 10 mg·L–1, respectively. No growth inhibition was observed when the culturing medium contained nitrite nitrogen of 0–120 mg·L–1 and ammonium nitrogen of below 20 mg·L–1. Five runs of semi-continuous cultivation with DPW as the culturing medium in a 250 L raceway pond showed that the biomass yield in a 9-day semi-continuous culturing was up to 45.2–64.7 g·m–2·d–1, higher than the yields obtained by other researchers, and the crude protein content in biomass was over 50%, meeting the national animal feed grade standard. Total nitrogen (TN) and total phosphorus (TP) were removed from DPW at a rate of 10.9–14.0 mg·L–1·d–1 and 1.3–1.8 mg·L–1·d–1, respectively. The mass balance revealed that 80–93% of TN and 84–98% of TP reduced from DPW were converted to A. platensis biomass.

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Chemical Composition and Functional Properties of Selected Seaweeds from the Kenya Coast

Journal of Food Research ◽

10.5539/jfr.v5n6p114 ◽

2016 ◽

Vol 5 (6) ◽

pp. 114 ◽

Cited By ~ 7

Author(s):

Eric N. Muraguri ◽

Joseph G. Wakibia ◽

John N. Kinyuru

Keyword(s):

Fatty Acids ◽

Functional Properties ◽

Saturated Fatty Acids ◽

Monounsaturated Fatty Acids ◽

Atomic Absorption Spectrophotometry ◽

Water Holding Capacity ◽

Hypnea Musciformis ◽

Eucheuma Denticulatum ◽

Ulva Fasciata ◽

Water Holding

The aim of the study was to determine the chemical and functional properties of five Kenyan seaweed species namely; (Hypnea musciformis, Eucheuma denticulatum, Laurencia intermedia, Sargassum oligocystum, Ulva fasciata) as a potential fat replacer in chicken sausage processing. The proximate composition was investigated using the standard AOAC methods, while the nitrogen-free extract (NFE) was determined by weight difference of the proximate components. The seaweeds were analyzed for mineral composition using atomic absorption spectrophotometry while the fatty acid profile was determined by gas chromatography. The water holding capacity and the emulsion capacity of the seaweed were determined using AACC procedures. The highest proximate component was NFE (65.06 %) while the least was crude fat (0.87 %). Among the nine minerals analyzed, calcium was the highest (1185.29 mg/100g) while lead was not detected. Saturated fatty acids (SFA) were the highest with a range of 53.03-71.05 % followed by monounsaturated fatty acids (4.83-17.71%) and polyunsaturated fatty acids (PUFA) (2.75 - 10.13%). The highest emulsifying activity was obtained in Ulva fasciata (75.66 %) and Eucheuma denticulatum (75.69 %) while the lowest was obtained in Sargassum oligocystum (59.19 %). The highest water holding capacity was obtained in Sargassum oligocystum (13.75ml/g) while the lowest was recorded in Eucheuma denticulatum (8.42ml/g) and Ulva fasciata (9.16ml/g). The findings of this study demonstrated the potential of seaweeds in improving the chemical and functional characteristics of processed foods.

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