scholarly journals The effect of chitosan concentration on flocculation efficiency microalgae Porphyridium cruentum (Rhodhophyta)

2021 ◽  
Vol 919 (1) ◽  
pp. 012052
Author(s):  
H Endrawati ◽  
W Widianingsih ◽  
RAT Nuraini ◽  
R Hartati ◽  
S Redjeki ◽  
...  
Keyword(s):  
Interaction Effect ◽  
Functional Food ◽  
Porphyridium Cruentum ◽  
Chitosan Concentration ◽  
Flocculation Efficiency ◽  
Red Microalgae ◽  
The Family ◽  
Flocculation Time

Abstract Porphyridium cruentum is a species of red microalgae belongs to the family Porphyridiophyceae, divisi Rhodophyta. P. cruentum contains a lot of nutrients which are very useful as functional food. The purpose of this research is to determine the effect of chitosan concentration on the flocculation efficiency of P. cruentum. In this study, there were two treatments, namely the concentration of chitosan and the time of flocculation with 3 replications. Chitosan used were 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100 ppm. The flocculation efficiency were carried out at 10, 20, 30 and 40 minutes. The highest density was reached on the seventh day as amount 1720x104cell/mL. The results showed that there was an effect of Chitosan concentration on flocculation efficiency (Anova two way; Fcount = 4.109; df (9; 80); p=0.01). In addition, there was an effect of flocculation time on flocculation efficiency (Anova two way, Fcount = 4.498; df (3;80)). Furthermore, there was an interaction effect between the chitosan concentration and the time of flocculation. (Anova two way; Fcount = 26.635; df (2;80)). The greater the value of chitosan concentration given the greater the value of flocculation efficiency.

Family environment of eating disordered patients with and without self-injurious behaviors

2004 ◽  
Vol 19 (8) ◽  
pp. 494-498 ◽  
Author(s):  
Laurence Claes ◽  
Walter Vandereycken ◽  
Hans Vertommen
Keyword(s):  
Psychiatric Disorders ◽  
Family Environment ◽  
Interaction Effect ◽  
Significant Interaction ◽  
Family Context ◽  
Hair Pulling ◽  
Significant Interaction Effect ◽  
Eating Disordered ◽  
Significant Difference ◽  
The Family

AbstractObjective.– The family environment is known to be an important contributor to the course of psychiatric disorders. In this study, we examined the family context of eating disordered (ED) patients with and without self-injurious behaviors (SIB).Method.– A Dutch adaptation of the Family Environment Scale ‘Sci Eng 57(9-B):1997;5927’ was completed by 131 ED patients of whom 47% showed at least one form of SIB (e.g., cutting, burning, hair pulling, etc.).Results– Results showed a significant difference in family environment between patients with and without SIB. The family environment of self-injuring ED patients was less cohesive, expressive and socially oriented, and more conflictual and disorganized than the family environment of those without SIB. No significant differences in perceived family environment were found with respect to the number or form of SIB and the subtype of ED. Neither did we find a significant interaction effect between ED subtype and presence/absence of SIB.

scholarly journals Effects of the Preschool-Based Family-Involving DAGIS Intervention on Family Environment: A Cluster Randomised Trial

Nutrients ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3387
Author(s):  
Carola Ray ◽  
Rejane Figueiredo ◽  
Riikka Pajulahti ◽  
Henna Vepsäläinen ◽  
Elviira Lehto ◽  
...  
Keyword(s):  
Family Environment ◽  
Interaction Effect ◽  
Repeated Measures ◽  
Randomised Trial ◽  
Intervention Group ◽  
Cluster Randomised Trial ◽  
Control Group ◽  
Intervention Effects ◽  
Role Modelling ◽  
The Family

Interventions promoting young children’s healthy energy balance-related behaviours (EBRBs) should also examine changes in the family environment as this is an important determinant that may affect the effectiveness of the intervention. This study examines family environmental effects of the Increased Health and Wellbeing in Preschools (DAGIS) intervention study, and whether these effects differed when considering three parental educational level (PEL) groups. The DAGIS intervention was conducted in preschools and involving parents in Southern Finland from September 2017 to May 2018. It was designed as a randomised trial, clustered at preschool-level. Parents of 3–6-year-olds answered questionnaires recording PEL, parental role modelling for EBRBs, and the family environment measured as EBRBs availability and accessibility. Linear Mixed Models with Repeated Measures were used in order to detect intervention effects. Models included group by time interactions. When examining intervention effects separated by PEL groups, models with three-level interactions (group × time-points × PEL) were evaluated. There was an interaction effect for the availability of sugary everyday foods and drinks (p = 0.002). The analyses showed that the control group increased availability (p = 0.003), whereas in the intervention group no changes were detected (p = 0.150). In the analysis separated by PEL groups, changes were found only for the accessibility of sugary treats at home; the high PEL control group increased the accessibility of sugary treats (p = 0.022) (interaction effect: p = 0.027). Hence, results suggest that the DAGIS multicomponent intervention had a limited impact on determinants for children’s healthy EBRBs, and no impact was found in the low PEL group.

scholarly journals Chitosan Added as an Antimicrobial in Edible Film and Its Application to The Dodol of Seaweed (Eucheuma cottonii L.)

2018 ◽  
Vol 47 ◽  
pp. 01001 ◽  
Author(s):  
Warkoyo ◽  
Noor Harini ◽  
David Hermawan ◽  
Yuliarie Wulandari
Keyword(s):  
Antimicrobial Activity ◽  
Shelf Life ◽  
Functional Food ◽  
Microbial Growth ◽  
Storage Period ◽  
Edible Film ◽  
Degenerative Diseases ◽  
Chitosan Concentration ◽  
Film Characteristics ◽  
Eucheuma Cottonii

Eucheuma cottonii L. seaweed contains dietary fiber that can cure some degenerative diseases. Dodol seaweed without preservatives can be an alternative as a functional food that many people need to maintain their health. Generally dodol made with the addition of preservatives to enhance the shelf life. Dodol without preservative makes its easily microbes growth and oxidized, thus making it quickly damaged and not accepted by consumers. The use of active edible film on dodol seaweed is expected to inhibit damage and prolong the shelf life. Chitosan is one of the recommended hydrophobic biopolymers to improve the film characteristics based starch while having antimicrobial activity. The purpose of this research is to know the effect of chitosan concentration on character of edible film, and the effect of its application on weight loss, texture and microbial quantity on dodol seaweed in the storage period. The research results showed that the addition of chitosan can increase tensile and transparency, and decrease of elongation and WVTR edible film. Active edible film application has been shown to inhibit the damage of dodol seaweed during the storage period compared without active edible film and inhibiting microbial growth.

scholarly journals Tembaga (Cu) Menurunkan Kandungan Pigmen dan Pertumbuhan Mikroalga Merah, Porphyridium cruentum (Effect of Copper on Pigments Content and Growth of Red Microalgae, Porphyridium cruentum)

2014 ◽  
Vol 19 (2) ◽  
pp. 97
Author(s):  
Reza Hafiz Pranajaya ◽  
Ali Djunaedi ◽  
Bambang Yulianto
Keyword(s):  
Heavy Metals ◽  
Porphyridium Cruentum ◽  
Technical Problems ◽  
Red Microalgae ◽  
Experimental Laboratory ◽  
Exposure Levels ◽  
Effect Of Copper ◽  
Percentage Absorption ◽  
Brackish Water Aquaculture ◽  
Aquaculture Development

Logam berat tembaga (Cu) merupakan salah satu pencemar yang paling mengkhawatirkan di wilayah pesisir dan lautan. Berbagai metode telah banyak dikembangkan untuk mengatasi dan mengurangi pencemaran logam berat, baik secara fisika, kimia dan biologi. Masalah teknis dan biaya yang mahal menyebabkan manusia menggunakan cara biologis (bioremediasi). Salah satu diantaranya menggunakan mikroalga Porphyridium cruentum. Penelitian bertujuan untuk mengetahui pengaruh tingkat konsentrasi logam berat Cu terhadap kandungan klorofil, pigmen fikobiliprotein dan pertumbuhan mikroalga P. cruentum. Bibit mikroalga diperoleh dari Balai Besar Pengembangan Budidaya Air Payau Situbondo. Rancangan penelitian menggunakan metode eksperimental laboratorium. Konsentrasi logam berat Cu yang digunakan adalah 0 ppm sebagai kontrol, 1, 2, 3  dan 4 ppm. Logam berat Cu dianalisa menggunakan AAS dan pigmen (klorofil dan fikobiliprotein) menggunakan spektrofotometri UV-Vis.Hasil yang didapat menunjukkan bahwa logam berat Cu dengan konsentrasi yang berbeda memberikan pengaruh yang sangat nyata (P<0,01) terhadap kandungan pigmen (klorofil dan fikobiliprotein), BCF dan pengaruh nyata (P<0,05) terhadap laju pertumbuhan P. cruentum. Semakin tinggi logam berat Cu membuat laju pertumbuhan, kandungan pigmen (klorofil dan fikobiliprotein), dan BCF pada P. cruentum semakin menurun. Prosentase penyerapan logam berat Cu tertinggi sebesar  13,1 % (1 ppm), 8,2 % (2 ppm), 6,9 % (3 ppm), dan 2,6% (4 ppm). Hasil penelitian ini menunjukkan bahwa P. cruentum berpotensi sebagai bioremediator. Kata kunci: Porphyridium cruentum; pigmen; klorofil; fikobiliprotein; pertumbuhan; tembaga   Copper (Cu) is one of heavy metals and the most pollutant at seawater ecosystem. Various methods have been developed to reduce heavy metal pollution with in physics, chemistry and biology method. Technical problems and high costs cause human use biological method (bioremediation). One of them used microalgae Porphyridium cruentum.This study aims to find out the influence of copper exposure levels on chlorophyll, pigment Phycobiliproteins, and the growth of microalgae Porphyridium cruentum. P. cruentum stock was collected from Main Center Brackish Water Aquaculture Development, Situbondo. The research design this study used a experimental laboratory. Concentrations of heavy metals Cu used are 0 ppm as control, 1 ppm, 2 ppm, 3 ppm, and 4 ppm. Heavy metals Cu analysised by AAS and measurent pigments (chlorophyll and phycobiliproteins) performed by spectrometric UV-Vis. The results showed that heavy metals Cu with different concentrations give a very effect influence (P<0.01) to pigment (chlorophyll and phycobiliproteins) content, BCF, and effect influence (P<0.05) to growth. The high Cu resulted decrease to growth of microalgae, cell density, pigments (chlorophyll and phycobiliproteins), and bio concentration factor Porphyridium cruentum. The highly percentage absorption of heavy metals Cu at 13.1% (1 ppm), 8.2% (2 ppm), 6.9% (3 ppm), and 2.6% (4 ppm). The results suggest that P. cruentum has the potential as bioremediator. Keywords: Porphyridium cruentum; chlorophyll; phycobiliproteins; growth; copper

scholarly journals A Novel Bioflocculant from Raoultella planticola Enhances Removal of Copper Ions from Water

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Fancheng Zeng ◽  
Liang Xu ◽  
Caiyun Sun ◽  
Hong Liu ◽  
Libo Chen
Keyword(s):  
Copper Concentration ◽  
Copper Ions ◽  
Copper Ion ◽  
Impact Factors ◽  
Toxic Heavy Metals ◽  
Songhua River ◽  
Raoultella Planticola ◽  
Flocculation Efficiency ◽  
Flocculation Time ◽  
Sampling Survey

Copper is one of the most toxic heavy metals. In this work, a sampling survey of copper ions in the water of Songhua River flowing through the chemical and living areas of Jilin City was studied. A new bioflocculant from Raoultella planticola was obtained. The investigation of Songhua River flowing through Jilin City shows that the copper concentration is between 0.07 ppb and 0.16 ppb. The bioflocculant supporting graphite oxide (GO) as a bioflocculant inducer used in this study has been utilized in treatment of copper ions in water. GO and bioflocculant infrared radiation (IR) spectrum and zeta potential were studied. Flocculational conditions of copper ion (0.2 ppm) were modeled and optimized using RSM (response surface methodology). Our data showed that flocculation efficiency was over 80%. Significant influencing factors and variables were pH, flocculation time, bioflocculant dosage, and GO inducer which had major impact effects on flocculation efficiency. The highest flocculation efficiency which is 86.01% was achieved at pH=5, at 1.62 h and 13.11 mg bioflocculant with 13.11 mg GO as an inducer. However, temperature (A) and GO inducer were significant impact factors on the flocculation efficiency.

scholarly journals Pomegranate, fruit of the desert, a functional food, and a healthy diet

2021 ◽  
Vol 13 (3) ◽  
pp. 11085
Author(s):  
Mohamad H. SHAHRAJABIAN ◽  
Wenli SUN ◽  
Qi CHENG
Keyword(s):  
Functional Food ◽  
Cultural Beliefs ◽  
Modern Medicine ◽  
Pomegranate Juice ◽  
Pharmacological Activities ◽  
Traditional Medicinal Plants ◽  
Wide Range ◽  
The Family ◽  
Pomegranate Fruit ◽  
Chemical Contents

Traditional medicinal plants contain various ranges of chemical contents and they have become popular because of effectiveness, frequently inadequate provision of modern medicine, preferences and cultural beliefs. Pomegranate belongs to the family of Punicaceae, and its various pharmacological activities are due to presence of wide range of bioactive compounds. The current searching was done by the keywords in main indexing systems including PubMed/MEDLINE, Scopus, and Institute for Scientific Web of Science as well as the search engine of Google Scholar. The keywords were traditional medicine, health benefits, pharmaceutical science, pomegranate, punicalin, punicalagin, and ellagitannins. Major polyphenols in peel and juice of pomegranate are flavonoids such as flavonols (catechin, epicatechin, gallocatechin), condensed tannins, phenolic acids such as gallic, ellagic and caffeic, hyrolysable tannins such as ellagitannins and gallotannins. The main organic acids in pomegranate juice are malic and citric, and in seed is fatty acids (punicic). The major alkaloids and lignans in peel are punigratane and isolariciresinol, respectively. Pomegranate fruit has been proven to act against various diseases like cancer, cardiovascular disorders, diabetes, AIDS, Alzheimer’s disease, male infertility, inflammation, coronary heart disease, and aging. The review summarizes the beneficial impacts of pomegranate which is recommended for consumption. Pomegranate is a high potential natural functional food due to its high pharmacological activities as an ancient efficacious natural drug.

scholarly journals Harvesting of Chlorella vulgaris grown in closed-photobioreactor with chitosan for use in food

2018 ◽  
Vol 17 (04) ◽  
pp. 102-111
Author(s):  
Vinh Truong
Keyword(s):  
Chlorella Vulgaris ◽  
Functional Food ◽  
Algal Biomass ◽  
Biomass Yield ◽  
Basal Medium ◽  
Physicochemical Composition ◽  
Flocculation Efficiency ◽  
Essential Components ◽  
Microbiological Criteria

Chlorella vulgaris was cultured in chemostat mode and harvested on a semi-continuous basic with 50% of broth volume every two days, giving the highest biomass yield. The flocculation efficiency of microalgae using chitosan depended on dose use, quality of chitosan such as degree of deacetylation (DD) and solubility. The flocculation efficiency was 99% after 30 minute, and 95% after 10 minute for DD of 87% and 89.8%, respectively. Chlorella vulgaris grown in 500 liter-tubular photobioreactor using Basal medium was harvested semi-continuously by three washing times in 2% acetic acid following chitosan flocculation to obtain clean biomass with lower 2% chitosan content (w/w). Analysis of physicochemical composition of algal biomass showed no heavy metal, reaching microbiological criteria, containing outstanding natural nutrients such as protein, lipid, chlorophyll superior to some other food materials. These nutrients are the essential components for human body, suitable for functional food application.

scholarly journals The Role of Family and School in Preparing Students for the General Secondary Certificate in Al-Ahsa Governorate

2013 ◽  
Vol 7 (1) ◽  
pp. 15
Author(s):  
Mohammad Salman Al – Khazalah
Keyword(s):  
Gender Difference ◽  
Interaction Effect ◽  
The Other ◽  
Significant Gender Difference ◽  
Other Hand ◽  
Significant Difference ◽  
The Family ◽  
Males And Females

This study aimed at identifying the role of the family and the role of school in preparing students for the General Secondary Certificate (GSC) in Al-Ahsa Governorate. The study sample consisted of 2000 students who were randomly selected (boys=1059, girls=941). The study found that the role of the family in preparing students for the General Secondary Certificate was high, but the role of school in such preparation was medium. The results indicated that there was no statistically significant gender difference in the role of the school. Academic stream,on the other hand, produced a statistically significant effect on the role of school in students preparation to GSC. Scientific stream students were better prepared than literary stream students. There was an interaction effect between gender and academic stream. In the scientific stream, males were higher, but in the literary stream females were higher. Also, there was significant difference between males and females regarding the role of family. 

scholarly journals Growth and Extracelluler Polysaccaride Production of Porphyridium cruentum In Various Photoperiod

2015 ◽  
Vol 18 (2) ◽  
pp. 219
Author(s):  
Himawan Prasetyo ◽  
Iriani Setyaningsih ◽  
Dewi Ratih Agungpriyono
Keyword(s):  
Optical Density ◽  
Extracellular Polysaccharide ◽  
Porphyridium Cruentum ◽  
Extracellular Polysaccharides ◽  
Optimum Growth ◽  
High Biomass ◽  
Red Microalgae

<p>Porphyridium cruentum is a kind of red microalgae (Rhodophyta) that can grow and produce<br />polysaccharides. Polysaccharides are produced on the cell, then released and accumulated by<br />extracellular into medias. This study aimed to determine the optimum growth and production<br />of extracellular polysaccharides (EPs) from P. cruentum in various photoperiods. The cultivation<br />was done with the photoperiods at 24:0, 18:6, 12:12 and 06:18 h (light:dark) during 40 days using<br />modified medium F/2. The growth is determined by measuring optical density (OD) and dried<br />biomasses, the productions of EPs are determined by dried weight polysaccharides as a result<br />of precipitation. The results showed that OD at photoperiod 24:0 has the highest value 0.876 ±<br />0.0645 unit of absorbance, biomass concentrations are highest in the photoperiod 24:0 and 12:12<br />respectively 716.12 ± 123 mg-l and 696.5 ± 74.5 mg-l, the highest production of EPs on the<br />photoperiod 12:12 is 1.310 ± 130.26 mg-l. 12:12 hours (light: dark) photoperiod is optimally used<br />in P. cruentum cultivations with high biomass and extracellular polysaccharide results.</p>

scholarly journals The Health Beneficial Properties of Rhodomyrtus tomentosa as Potential Functional Food

Biomolecules ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 76 ◽  
Author(s):  
Thanh Vo ◽  
Dai Ngo
Keyword(s):  
Functional Food ◽  
Biological Activities ◽  
Biologically Active ◽  
Flowering Plant ◽  
Active Metabolites ◽  
The Family ◽  
Long Time ◽  
Potential Resource ◽  
Biologically Active Metabolites ◽  
Rhodomyrtus Tomentosa

Rhodomyrtus tomentosa (Aiton) Hassk. is a flowering plant belonging to the family Myrtaceae, native to southern and southeastern Asia. It has been used in traditional Vietnamese, Chinese, and Malaysian medicine for a long time for the treatment of diarrhea, dysentery, gynecopathy, stomachache, and wound healing. Moreover, R. tomentosa is used to make various food products such as wine, tea, and jam. Notably, R. tomentosa has been known to contain structurally diverse and biologically active metabolites, thus serving as a potential resource for exploring novel functional agents. Up to now, numerous phenolic and terpenoid compounds from the leaves, root, or fruits of R. tomentosa have been identified, and their biological activities such as antioxidant, antibacterial, anti-inflammatory, and anticancer have been evidenced. In this contribution, an overview of R. tomentosa and its health beneficial properties was focused on and emphasized.

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