scholarly journals Temperature ranges for survival and growth of juvenile Saccharina sculpera (Laminariales, Phaeophyta) and applications for field cultivation

ALGAE ◽  
2021 ◽  
Vol 36 (4) ◽  
pp. 231-240
Author(s):  
Soo Hong Kim ◽  
Young Dae Kim ◽  
Mi Sook Hwang ◽  
Eun Kyoung Hwang ◽  
Hyun Il Yoo
Keyword(s):  
Seawater Temperature ◽  
Sustainable Use ◽  
Value Added ◽  
Optimal Growth ◽  
Human Consumption ◽  
Cultivation Period ◽  
Light Intensities ◽  
Sustainable Cultivation ◽  
Survival And Growth ◽  
Upper Level

Saccharina sculpera is highly valued for human consumption and value-added products. However, natural resources of this kelp have decreased sharply and it is in danger of extinction. Resources recovery through cultivation is being trialed to enable the sustainable use of this species. In this study, the temperature range for survival and optimal growth of juvenile S. sculpera was identified and applied to field cultivation. This study investigated the survival and growth of juvenile S. sculpera under six temperatures (i.e., 5, 10, 15, 16, 18, and 20°C) and two light intensities (i.e., 20 and 40 μmol photons m-2 s-1) in an indoor culture experiment. In these experiments, the blade length decreased at 16°C under the both light intensities. The thalli died at 20°C and 20 μmol photons m-2 s-1, and at 18‒20°C and 40 μmol photons m-2 s-1. During the field cultivation, early growth of S. sculpera was highest at the 5 m depth and growth decreased as the water depth increased. When the initial rearing depth was maintained without adjustment throughout the cultivation period (from December to October), all the cultivated S. sculpera plants died during August and September. However, S. sculpera plants lowered from 5 to 15 m and grew to 90.8 ± 13.1 cm in July. The seawater temperature at 15 m depth was similar to the upper level of thermal tolerance demonstrated by juvenile S. sculpera in the indoor culture experiments (16°C or lower). The plants were subsequently lowered to 25 m depth in August, which eventually led to their maturation in October. The present study confirmed that improved growth rates and a delay in biomass loss can be achieved by adjusting the depth at which the seaweeds are grown during the cultivation period. These results will contribute to the establishment of sustainable cultivation systems for S. sculpera.

scholarly journals Development of New Chip Products from Brewer’s Spent Grain

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Reann Garrett ◽  
Danielle Bellmer ◽  
William McGlynn ◽  
Patricia Rayas-Duarte
Keyword(s):  
Sensory Evaluation ◽  
Rating Scale ◽  
Animal Feed ◽  
Value Added ◽  
Human Consumption ◽  
Processing Waste ◽  
Brewing Industry ◽  
Consumer Responses ◽  
Brewer’S Spent Grain ◽  
Spent Grain

Brewer’s spent grain (BSG) is a processing waste generated in large quantities by the brewing industry. It is estimated that over 38 million tons of BSG is produced worldwide each year and is usually used as animal feed, composted, or thrown into landfills. BSG contains valuable nutritional components, including protein, fiber, and antioxidants. Due to its brittle texture, strong nutty flavors, and dark color profiles, BSG has seen limited use in food products for human consumption. The objective of this study was to develop a palatable chip product that maximized the level of inclusion of BSG. Chips were produced that contained BSG levels ranging from 8% to 40%, and the physical and sensory properties of the chips were evaluated. Spent grain samples were provided by Iron Monk in Stillwater and were dried at a low temperature and milled into flour for use in the chip formulation. BSG chips were evaluated for water activity, color, and texture (fracture force). An informal sensory evaluation was conducted to evaluate flavor, texture, and probability of purchase using a 5-point hedonic rating scale. Results showed that there were no significant differences in the texture of the chips containing different levels of BSG. The color measurements showed no significant differences between L ∗ and a ∗ values for the chips containing different inclusion levels of BSG, but there were some differences in the b ∗ values. Results from the sensory evaluation showed that consumers preferred the texture of chips with 40% BSG over chips with 8% BSG, and they were also more likely to purchase the 40% BSG chips. There were no significant differences in flavor among the chips containing different inclusion levels of BSG. These results suggest that, for a chip-type product, BSG inclusion levels up to 40% are possible with positive consumer responses. Development of an alternative value-added product represents an opportunity for breweries nationwide to turn a processing waste into a future asset.

scholarly journals High density cultivation for efficient sesquiterpenoid biosynthesis in Synechocystis sp. PCC 6803

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Dennis Dienst ◽  
Julian Wichmann ◽  
Oliver Mantovani ◽  
João S. Rodrigues ◽  
Pia Lindberg
Keyword(s):  
Reference Conditions ◽  
Value Added ◽  
Biomass Accumulation ◽  
High Density ◽  
Specific Productivity ◽  
Batch Mode ◽  
Process Characteristics ◽  
Sustainable Cultivation ◽  
Pcc 6803

AbstractCyanobacteria and microalgae are attractive photoautotrophic host systems for climate-friendly production of fuels and other value-added biochemicals. However, for economic applications further development and implementation of efficient and sustainable cultivation strategies are essential. Here, we present a comparative study on cyanobacterial sesquiterpenoid biosynthesis in Synechocystis sp. PCC 6803 using a commercial lab-scale High Density Cultivation (HDC) platform in the presence of dodecane as in-situ extractant. Operating in a two-step semi-batch mode over a period of eight days, volumetric yields of (E)-α-bisabolene were more than two orders of magnitude higher than previously reported for cyanobacteria, with final titers of 179.4 ± 20.7 mg * L−1. Likewise, yields of the sesquiterpene alcohols (−)-patchoulol and (−)-α-bisabolol were many times higher than under reference conditions, with final titers of 17.3 ± 1.85 mg * L−1 and 96.3 ± 2.2 mg * L−1, respectively. While specific productivity was compromised particularly for (E)-α-bisabolene in the HDC system during phases of high biomass accumulation rates, volumetric productivity enhancements during linear growth at high densities were more pronounced for (E)-α-bisabolene than for the hydroxylated terpenoids. Together, this study provides additional insights into cell density-related process characteristics, introducing HDC as highly efficient strategy for phototrophic terpenoid production in cyanobacteria.

scholarly journals Changes in Phenolics and Fatty Acids Composition and Related Gene Expression during the Development from Seed to Leaves of Three Cultivated Cardoon Genotypes

Antioxidants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1096
Author(s):  
Giulia Graziani ◽  
Teresa Docimo ◽  
Monica De Palma ◽  
Francesca Sparvoli ◽  
Luana Izzo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Wide Spectrum ◽  
Sustainable Use ◽  
Fatty Acid Desaturase ◽  
Value Added ◽  
Industrial Applications ◽  
Transcriptional Analysis ◽  
Total Phenols ◽  
Superior Genotypes

Cultivated cardoon (Cynara cardunculus var. altilis) has long been used as a food and medicine remedy and nowadays is considered a functional food. Its leaf bioactive compounds are mostly represented by chlorogenic acids and coumaroyl derivatives, known for their nutritional value and bioactivity. Having antioxidant and hepatoprotective properties, these molecules are used for medicinal purposes. Apart from the phenolic compounds in green tissues, cultivated cardoon is also used for the seed oil, having a composition suitable for the human diet, but also valuable as feedstock for the production of biofuel and biodegradable bioplastics. Given the wide spectrum of valuable cardoon molecules and their numerous industrial applications, a detailed characterization of different organs and tissues for their metabolic profiles as well as an extensive transcriptional analysis of associated key biosynthetic genes were performed to provide a deeper insight into metabolites biosynthesis and accumulation sites. This study aimed to provide a comprehensive analysis of the phenylpropanoids profile through UHPLC-Q-Orbitrap HRMS analysis, of fatty acids content through GC-MS analysis, along with quantitative transcriptional analyses by qRT-PCR of hydroxycinnamoyl-quinate transferase (HQT), stearic acid desaturase (SAD), and fatty acid desaturase (FAD) genes in seeds, hypocotyls, cotyledons and leaves of the cardoon genotypes “Spagnolo”, “Bianco Avorio”, and “Gigante”. Both oil yield and total phenols accumulation in all the tissues and organs indicated higher production in “Bianco Avorio” and “Spagnolo” than in “Gigante”. Antioxidant activity evaluation by DPPH, ABTS, and FRAP assays mirrored total phenols content. Overall, this study provides a detailed analysis of tissue composition of cardoon, enabling to elucidate value-added product accumulation and distribution during plant development and hence contributing to better address and optimize the sustainable use of this natural resource. Besides, our metabolic and transcriptional screening could be useful to guide the selection of superior genotypes.

scholarly journals Fruit Seeds as Sources of Bioactive Compounds: Sustainable Production of High Value-Added Ingredients from By-Products within Circular Economy

Molecules ◽  
2019 ◽  
Vol 24 (21) ◽  
pp. 3854 ◽  
Author(s):  
Fidelis ◽  
Moura ◽  
Kabbas Junior ◽  
Pap ◽  
Mattila ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Circular Economy ◽  
Raw Materials ◽  
Scale Up ◽  
Sustainable Use ◽  
Value Added ◽  
Water Soluble ◽  
Lipophilic Compounds

The circular economy is an umbrella concept that applies different mechanisms aiming to minimize waste generation, thus decoupling economic growth from natural resources. Each year, an estimated one-third of all food produced is wasted; this is equivalent to 1.3 billion tons of food, which is worth around US$1 trillion or even $2.6 trillion when social and economic costs are included. In the fruit and vegetable sector, 45% of the total produced amount is lost in the production (post-harvest, processing, and distribution) and consumption chains. Therefore, it is necessary to find new technological and environmentally friendly solutions to utilize fruit wastes as new raw materials to develop and scale up the production of high value-added products and ingredients. Considering that the production and consumption of fruits has increased in the last years and following the need to find the sustainable use of different fruit side streams, this work aimed to describe the chemical composition and bioactivity of different fruit seeds consumed worldwide. A comprehensive focus is given on the extraction techniques of water-soluble and lipophilic compounds and in vitro/in vivo functionalities, and the link between chemical composition and observed activity is holistically explained.

scholarly journals Characterization of the fishes and of subsistence fishing in the Pantanal of Mato Grosso, Brazil

2000 ◽  
Vol 60 (3) ◽  
pp. 435-445 ◽  
Author(s):  
R. D. de OLIVEIRA ◽  
F. M. de B. NOGUEIRA
Keyword(s):  
Sustainable Use ◽  
Human Consumption ◽  
Fishing Activity ◽  
Mato Grosso ◽  
Fish Stocks ◽  
Central Brazil ◽  
Fish Meat ◽  
Poor Families ◽  
Subsistence Fishing

Fishing is one of the oldest human activities in the Pantanal of Mato Grosso in Central Brazil. In the of Bento Gomes River Basin (Pantanal of Poconé) the presence of fishermen is very common. The objective of this study is to describe the fishing activity in the basin in view of the elaboration of proposals for the sustainable use of this natural resource. Of the 256 fishermen that were registered most are fishing for their subsistence (92%) and the rest (8%) are occasional fishermen (locally called "de lufada" fishermen). "Traíra" (Hoplias gr. malabaricus) and "piranhas" (Serrasalmus marginatus, Serrasalmus spilopleura and Pygocentrus nattereri) were the species most frequently captured for human consumption. The fishing is more intensive during the ebb season and at the beginning of the drought season, when the waters begin to recede for the river channel, as the catch is facilitated by the concentration of fishes at the river margin. The fishermen and their families consume fish three to four times a week, twice a day. Fish meat is one of the only means of obtaining animal protein for dozens of poor families in the area. The number of fishermen, as well as the actual number of catches do not appear to compromise the natural fish stocks, although no specific capture criteria is obeyed by the fishing activity.

scholarly journals Evaluation of Rural Entrepreneurship with Value Added Regram (Cajanus cajan) Using Mini Dal Mill

2021 ◽  
pp. 160-165
Author(s):  
Afifa Jahan ◽  
R. Arunjyothi ◽  
M. Jagan Mohan Reddy ◽  
T. Prabhakar Reddy ◽  
A. Shankar ◽  
...  
Keyword(s):  
Value Added ◽  
Cost Benefit ◽  
Complete Removal ◽  
Human Consumption ◽  
Net Income ◽  
Toxic Compounds ◽  
Net Returns ◽  
Cost Benefit Ratio ◽  
Gross Income ◽  
The Cost

Pulses processing is a very huge business in India. In India, split of pulses are prepared called as “Dal” or “Dhal”. Regdram cultivating farmers are demotivated as there net returns are low due to continuous market fluctuation in prices of Redgram and this is becoming the reason for decrease in area of cultivation under Redgram. Milling pulses improves bio-availability of nutrients and Partial or complete removal of antinutritional and toxic compounds making it nutritive for human consumption. Mini dal mill is low investment enterprise to improve the net income of farmers. The present study concluded that the average gross income through sale of Redgram is Rs 41.3/KG without processing and Rs 63/KG with processing. The profitability is more with the processing of Redgram. The cost benefit ratio is 1:1.18 without processing and 1:1.80 with processing. Hence farmers must be educated to develop entrepreneurship and promote value added Redgram using mini dal mill.

scholarly journals EVALUATION OF PROBLEMS AND POSSIBILITIES OF INDUSTRIAL FISH UTILISATION FOR HUMAN CONSUPTION

Ekonomika ◽  
2010 ◽  
Vol 89 (1) ◽  
pp. 107-122
Author(s):  
Arina Motova ◽  
Tomas Zolubas
Keyword(s):  
Baltic Sea ◽  
Fish Species ◽  
Value Added ◽  
Pelagic Fish ◽  
Raw Material ◽  
Human Consumption ◽  
Global Level ◽  
Foreign Markets ◽  
First Sale ◽  
Total Volume Versus

Fish caught by Lithuanian Baltic Sea fishermen is used for industrial purposes to a relatively large proportion – 60–80 percent of the total volume versus 25–30 percent on the global level. There is no fully developed fishmeal industry in Lithuania, so industrial fish species are disposed of at foreign markets. The first sale prices for fish used for human consumption are higher. It is considered that saling sprats and herrings for human consumption would increase fishermen’s income, create an additional profit and value added. The purpose of the study was to determine the economic reasons why a large portion of Lithuanian landings of Baltic Sea pelagic fish species are used for industrial purposes. The study has shown that the main reasons are unstable, seasonal supply of sorted and good quality raw material and the lack of production sales markets. The authors have investigated the problem and proposed possibilities to increase the use of industrial fish for human consumption in Lithuania.

scholarly journals THE BRAZILIAN ‘ECOLOGICAL-ICMS’: A PES SCHEME BASED ON DISTRIBUTION OF TAX REVENUE

2018 ◽  
Vol 3 (3-4) ◽  
pp. 421-439
Author(s):  
Matheus Linck Bassani
Keyword(s):  
Environmental Protection ◽  
Sustainable Use ◽  
Value Added ◽  
Tax Revenue ◽  
Ecological State ◽  
Payment For Ecosystem Services ◽  
Protection Measures ◽  
Goods And Services ◽  
Brazilian Legislation ◽  
Deductive Method

The scope of this legal brief is to analyze the Brazilian legislation concerning the ‘Ecological-ICMS’, the ‘ecological’ State value-added tax imposed on the circulation of goods and services – ICMS. Using a deductive method, it was identified this tax mechanism operates as a type of ‘payment for ecosystem services’ (PES) scheme in practice, offering the possibility to stimulate environmental protection by distributing revenue from ICMS collected by States to Municipalities that promote conservation of ecosystems and biodiversity. This type of measure was motivated by the need to address challenges in providing economic compensation for Municipalities that undertook environmental protection measures in Brazil, and can serve as a form of positive incentive for the conservation and sustainable use of biodiversity. 

scholarly journals Seawater Temperature Prediction Method for Sustainable Marine Aquaculture

2017 ◽  
Author(s):  
Takanobu Otsuka ◽  
Yuji Kitazawa ◽  
Takayuki Ito
Keyword(s):  
Seawater Temperature ◽  
Prediction Method ◽  
Value Added ◽  
Temperature Data ◽  
Weather Data ◽  
Marine Resources ◽  
Temperature Prediction ◽  
Marine Aquaculture ◽  
Value Added Products

Aquaculture is growing ever more important due to the decrease in natural marine resources and increase inworldwide demand. To avoid losses due to aging and abnormalweather, it is important to predict seawater temperature in order to maintain a more stable supply, particularly for high value added products, such as pearls and scallops. The increase in species extinction is a prominent societal issue. Furthermore, in order to maintain a stable quality of farmed fishery, water temperature should be measured daily and farming methods altered according to seasonal stresses. In this paper, we propose an algorithm to estimate seawater temperature in marine aquaculture by combining seawater temperature data and actual weather data.

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