Strategy to increase the lipid stability of the microbial oil produced by Umbelopsis isabellina for food purposes: use of microencapsulation by external ionic gelation

2021 ◽  
pp. 110907
Author(s):  
Simara Somacal ◽  
Sabrina Somacal ◽  
Vandré Sonza Pinto ◽  
Cassandra de Deus ◽  
Raquel Guidetti Vendruscolo ◽  
...  
Keyword(s):  
Ionic Gelation ◽  
Microbial Oil ◽  
Lipid Stability

SINTESIS DAN KARAKTERISASI NANOPARTIKEL KITOSAN – EKSTRAK KULIT BUAH MANGGIS (Garcinia Mangostana)

2013 ◽  
Vol 14 (3) ◽  
Author(s):  
Eriawan Rismana ◽  
Susi Kusumaningrum ◽  
Olivia Bunga P ◽  
Idah Rosidah ◽  
Marhamah Marhamah
Keyword(s):  
Particle Size ◽  
Sodium Tripolyphosphate ◽  
Chitosan Solution ◽  
The Other ◽  
Ionic Gelation ◽  
Garcinia Mangostana ◽  
Particle Size Analyzer ◽  
Cadmium Lead ◽  
Solvent Residue ◽  
Mold And Yeast

The chitosan – Garcinia Mangostana extract nanoparticles has been prepared by ionic gelation reaction by mixture 0.2 % chitosan solution in acetic acid with Garcinia Mangostana extract and it’s continued by reaction process with 0.1 % sodium tripolyphosphate. The particle size of material was determined by Particle Size Analyzer (PSA) that it showed in the range of 200 – 500 nm. The color, pH, water, α- mangostin, mercury, arsenic, cadmium, lead, totally microbe aerobic, totally mold and yeast, and solvent residue contents of nanoparticles were also examined by many methods that these resulted are yellow, 4.50 – 5.50, 89 – 90 %, 1.05 %, < 0.005 ppm, < 0.01 ppm, < 0.01 ppm, < 0.05 ppm, < 10 CFU/g, < 10 CFU/g and not detected, respectively. The other characterization was also observed that it’sincluded stability andTLC chromatogram. A mixture of nanoparticles with cosmetics bases was showed that it’s increased stability, homogeneity and easy to formed.

Analgesic Effectivty Of Nanoparticles Chitosan-Ethanol Leaf Extract Papaya (Carica Papaya L.) In White Male Mice (Mus Mucculus)

2017 ◽  
Vol 15 (2) ◽  
pp. 228
Author(s):  
Juliferd Gredi ◽  
Wintari Taurina ◽  
Mohamad Andrie
Keyword(s):  
Leaf Extract ◽  
Carica Papaya ◽  
White Male ◽  
Ethanol Extract ◽  
Test Method ◽  
Ionic Gelation ◽  
Male Mice ◽  
Writhing Test ◽  
Effi Ciency ◽  
Optimal Formula

Papaya leaves has been shown to have efficacy as an analgesic. Analgesic effect caused by the flavonoids in leaves of papaya. To enhance the analgesic effi cacy papaya into dosage formulatio of nanoparticles. The purpose of this research was to create and characterized nanoparticles from ethanol extract of papaya leaves then tested for effectiveness as an analgesic. This study used polymer chitosan and NaTPP to created nanoparticles through ionic gelation method and analgesic activity tested using writhing test method and statistical tested. Optimal formula of nanoparticles were produced at concentration of 0.2% chitosan, Na-TPP extract 0.1% and 4% with a ratio of 6: 1: 1. The nanoparticles was formed a size of 255.4 nm with polidispers index of 0.7, the zeta potential of + 11,1mV, the adsorption effi ciency by 87% and rounded morphology (spherical). Analgesic effectiveness tested by comparison between the groups ethanol extract of papaya and the groups nanoparticles of chitosan-ethanol extract papaya statistically using the T-test Independent. The results of this research indicate that there are statistically signifi cant differences (p <0.05). This results shows that the preparation nanoparticles of chitosan-ethanol extract papaya is more effective as an analgesic than the ethanol extract of papaya leaves.

The strain Gordonia alkanivorans 135 Is a Promising Destructor of Dibenzothiophene

2020 ◽  
Vol 36 (4) ◽  
pp. 121-125
Author(s):  
Е.Е. Frantsuzova ◽  
A.A. Vetrova
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Carbon Source ◽  
High Performance ◽  
Microbial Oil ◽  
Free Medium ◽  
Russian Science ◽  
Technological Method ◽  
Gordonia Alkanivorans

Genes involved in the dibenzothiophene degradation have been identified in the genome of Gordonia alkanivorans 135. The efficiency of the degradation was evaluated by high-performance liquid chromatography after the strain cultivation in mineral sulfur-free medium with glucose (hexadecane) as a carbon source at a temperature of 28 °C. The results obtained in this work allow us to consider the Gordonia alkanivorans 135 strain as promising for development of bio technological method for microbial oil desulfurization. Gordonia, dibenzothiophene, biodegradation. This work was financially supported by the Russian Science Foundation (Grant no. 19-74-00097).

scholarly journals Simultaneous lipid biosynthesis and recovery for oleaginous yeast Yarrowia lipolytica

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Pratik Prashant Pawar ◽  
Annamma Anil Odaneth ◽  
Rajeshkumar Natwarlal Vadgama ◽  
Arvind Mallinath Lali
Keyword(s):  
Yarrowia Lipolytica ◽  
Oil Recovery ◽  
Oleaginous Yeast ◽  
Fermentation Broth ◽  
Continuous Production ◽  
Oil Production ◽  
Biofuel Production ◽  
Oil Yield ◽  
Microbial Oil

Abstract Background Recent trends in bioprocessing have underlined the significance of lignocellulosic biomass conversions for biofuel production. These conversions demand at least 90% energy upgradation of cellulosic sugars to generate renewable drop-in biofuel precursors (Heff/C ~ 2). Chemical methods fail to achieve this without substantial loss of carbon; whereas, oleaginous biological systems propose a greener upgradation route by producing oil from sugars with 30% theoretical yields. However, these oleaginous systems cannot compete with the commercial volumes of vegetable oils in terms of overall oil yields and productivities. One of the significant challenges in the commercial exploitation of these microbial oils lies in the inefficient recovery of the produced oil. This issue has been addressed using highly selective oil capturing agents (OCA), which allow a concomitant microbial oil production and in situ oil recovery process. Results Adsorbent-based oil capturing agents were employed for simultaneous in situ oil recovery in the fermentative production broths. Yarrowia lipolytica, a model oleaginous yeast, was milked incessantly for oil production over 380 h in a media comprising of glucose as a sole carbon and nutrient source. This was achieved by continuous online capture of extracellular oil from the aqueous media and also the cell surface, by fluidizing the fermentation broth over an adsorbent bed of oil capturing agents (OCA). A consistent oil yield of 0.33 g per g of glucose consumed, corresponding to theoretical oil yield over glucose, was achieved using this approach. While the incorporation of the OCA increased the oil content up to 89% with complete substrate consumptions, it also caused an overall process integration. Conclusion The nondisruptive oil capture mediated by an OCA helped in accomplishing a trade-off between microbial oil production and its recovery. This strategy helped in realizing theoretically efficient sugar-to-oil bioconversions in a continuous production process. The process, therefore, endorses a sustainable production of molecular drop-in equivalents through oleaginous yeasts, representing as an absolute microbial oil factory.

scholarly journals FORMULATION AND CHARACTERIZATION OF TIMOLOL MALEATE-LOADED NANOPARTICLES GEL BY IONIC GELATION METHOD USING CHITOSAN AND SODIUM ALGINATE

2019 ◽  
pp. 48-54 ◽  
Author(s):  
RISA AHDYANI ◽  
LARAS NOVITASARI ◽  
RONNY MARTIEN
Keyword(s):  
Particle Size ◽  
Zeta Potential ◽  
Sodium Alginate ◽  
Release Kinetics ◽  
In Vitro Release ◽  
Entrapment Efficiency ◽  
Polydispersity Index ◽  
Ionic Gelation ◽  
Timolol Maleate ◽  
Optimum Formula

Objective: The objectives of this study were to formulate and characterize nanoparticles gel of timolol maleate (TM) by ionic gelation method using chitosan (CS) and sodium alginate (SA). Methods: Optimization was carried out by factorial design using Design Expert®10.0.1 software to obtain the concentration of CS, SA, and calcium chloride (CaCl2) to produce the optimum formula of TM nanoparticles. The optimum formula was characterized for particle size, polydispersity index, entrapment efficiency, Zeta potential, and molecular structure. Hydroxy Propyl Methyl Cellulose (HPMC) K15 was incorporated into optimum formula to form nanoparticles gel of TM and carried out in vivo release study using the Franz Diffusion Cell. Results: TM nanoparticles was successfully prepared with concentration of CS, SA, and CaCl2 of 0.01 % (w/v), 0.1 % (w/v), and 0.25 % (w/v), respectively. The particle size, polydispersity index, entrapment efficiency, and Zeta potential were found to be 200.47±4.20 nm, 0.27±0.0154, 35.23±4.55 %, and-5.68±1.80 mV, respectively. The result of FTIR spectra indicated TM-loaded in the nanoparticles system. In vitro release profile of TM-loaded nanoparticles gel showed controlled release and the Korsmeyer-Peppas model was found to be the best fit for drug release kinetics. Conclusion: TM-loaded CS/SA nanoparticles gel was successfully prepared and could be considered as a promising candidate for controlled TM delivery of infantile hemangioma treatment.

scholarly journals Pilot scale biodiesel production from microbial oil of Rhodosporidium toruloides DEBB 5533 using sugarcane juice: Performance in diesel engine and preliminary economic study

2017 ◽  
Vol 223 ◽  
pp. 259-268 ◽  
Author(s):  
Carlos Ricardo Soccol ◽  
Carlos José Dalmas Neto ◽  
Vanete Thomaz Soccol ◽  
Eduardo Bittencourt Sydney ◽  
Eduardo Scopel Ferreira da Costa ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Pilot Scale ◽  
Rhodosporidium Toruloides ◽  
Sugarcane Juice ◽  
Biodiesel Production ◽  
Microbial Oil ◽  
Economic Study
Sign in / Sign up

Export Citation Format

Share Document