scholarly journals Various Perspectives on Microbial Lipase Production Using Agri-Food Waste and Renewable Products

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 540
Author(s):  
Tomasz Szymczak ◽  
Justyna Cybulska ◽  
Marcin Podleśny ◽  
Magdalena Frąc
Keyword(s):  
Production Cost ◽  
Microbial Growth ◽  
Industrial Effluents ◽  
Lipase Production ◽  
Waste Materials ◽  
Oil Cakes ◽  
Wide Range ◽  
Microbial Lipases ◽  
Main Component ◽  
Lower Production

Lipases are enzymes that catalyze various types of reactions and have versatile applications. Additionally, lipases are the most widely used class of enzymes in biotechnology and organic chemistry. Lipases can be produced by a wide range of organisms including animals, plants and microorganisms. Microbial lipases are more stable, they have substrate specificity and a lower production cost as compared to other sources of these enzymes. Although commercially available lipases are widely used as biocatalysts, there are still many challenges concerning the production of microbial lipases with the use of renewable sources as the main component of microbial growth medium such as straw, bran, oil cakes and industrial effluents. Submerged fermentation (SmF) and solid-state fermentation (SSF) are the two important technologies for the production of lipases by microorganisms. Therefore, this review focuses on microbial lipases, especially their function, specificity, types and technology production, including the use of renewable agro-industrial residues and waste materials.

Synthesis and Characterization of Hyaluronic Acid for Biomedical Application

2012 ◽  
Vol 581-582 ◽  
pp. 185-188 ◽  
Author(s):  
Dongoun Lee ◽  
Mohammed Nurunnabi ◽  
Joon Hwang ◽  
Eui Sik Chung ◽  
Mohammed Rahmatullah ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Production Cost ◽  
Glucuronic Acid ◽  
Biomedical Application ◽  
Healthcare Industry ◽  
Purification Process ◽  
Dialysis Membrane ◽  
Wide Range ◽  
Lower Production

Hyaluronic acid is a linear polysaccharide composed of glucuronic acid and N-acetylglucosamine. HA-based biomaterials secure wide-range applications in the healthcare industry. The material is found in cartilage, skin, umbilical cord, synovial fluid, as well as in the cell wall of bacteria such a Streptococcus zooepidemicus. As a consequence of these wide applications, HA production from microbial fermentation is receiving increased attention for avoiding the risk of cross-species viral infection, to have lower production cost and to favor a more efficient purification. The molecular weight is increased by adding poly-γ-glutamic acid, which inhibits hyaluronidase of medium, and the degree of purity is enhanced by a purification process using the means of dialysis membrane and organic solvent.

scholarly journals Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1396
Author(s):  
Z. N. Diyana ◽  
R. Jumaidin ◽  
Mohd Zulkefli Selamat ◽  
Ihwan Ghazali ◽  
Norliza Julmohammad ◽  
...  
Keyword(s):  
Thermoplastic Starch ◽  
Natural Fibre ◽  
Polymer Materials ◽  
Secondary Pollution ◽  
Wide Range ◽  
Potential Applications ◽  
Long Time ◽  
To Come ◽  
Main Component ◽  
Significant Attention

Thermoplastic starch composites have attracted significant attention due to the rise of environmental pollutions induced by the use of synthetic petroleum-based polymer materials. The degradation of traditional plastics requires an unusually long time, which may lead to high cost and secondary pollution. To solve these difficulties, more petroleum-based plastics should be substituted with sustainable bio-based plastics. Renewable and natural materials that are abundant in nature are potential candidates for a wide range of polymers, which can be used to replace their synthetic counterparts. This paper focuses on some aspects of biopolymers and their classes, providing a description of starch as a main component of biopolymers, composites, and potential applications of thermoplastics starch-based in packaging application. Currently, biopolymer composites blended with other components have exhibited several enhanced qualities. The same behavior is also observed when natural fibre is incorporated with biopolymers. However, it should be noted that the degree of compatibility between starch and other biopolymers extensively varies depending on the specific biopolymer. Although their efficacy is yet to reach the level of their fossil fuel counterparts, biopolymers have made a distinguishing mark, which will continue to inspire the creation of novel substances for many years to come.

scholarly journals PEMILIHAN PROSES PENGADAAN BAHAN BAKU JAHE MERAH KERING DALAM MEMPRODUKSI BANDREK INSTAN DALAM KEMASAN; THE USE OF DRIED RED GINGER AS RAW MATERIAL IN PRODUCINGINSTANT BANDREK

OPTIMA ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Levina Maharani ◽  
Endah Djuwendah
Keyword(s):  
Production Cost ◽  
International Market ◽  
Raw Material ◽  
Limited Resources ◽  
Qualitative Descriptive ◽  
C Value ◽  
Equal Income ◽  
Red Ginger ◽  
Descriptive Method ◽  
Lower Production

Bandrek Hanjuang merupakan minuman kemasan khas dari Jawa Barat yang sudah dipasarkan baik di dalam negeri maupun internasional. Perubahan manajemen pada perusahaan ini berdampak pada peningkatan penjualan produk yang dihasilkannya. Disisi lain, keterbatasan lahan yang dimiliki membuat perusahaan belum mampu memastikan ketersediaan bahan baku seiring dengan meningkatnya kebutuhan terhadap bahan baku tersebut. Tujuan penelitian ini untuk menganalisis kelayakan usaha produksi bandrek menggunakan dua alternatif pengadaan bahan baku jahe merah yaitu memproduksi sendiri atau membeli dari luar menggunakan analisis R-C Rasio. Penelitian dilakukan di CV. Cihanjuang Inti Teknik dari bulan Maret-September 2015. Metode yang digunakan adalah metode deskriptif kualitatif, yaitu penelitian yang diarahkan untuk memberikan informasi secara sistematis dan akurat mengenai objek penelitian serta menganalisis berdasarkan data yang diperoleh. Hasil penelitian menunjukan bahwa dengan jumlah pendapatan yang sama, proses produksi dengan alternatif pengadaan jahe merah dengan memproduksi sendiri memiliki nilai R/C yang lebih tinggi dibandingkan dengan membeli dari luar. Hal ini menunjukkan bahwa proses produksi dengan alternatif pengadaan jahe merah dengan memproduksi sendiri memiliki biaya produksi yang lebih rendah sehingga memiliki keuntungan yang lebih besar. Oleh karena itu, proses produksi dengan alternatif pengadaan jahe merah dengan memproduksi sendiri dinilai lebih layak untuk direalisasikan. Kata kunci : bandrek, jahe merah, kelayakan usaha, pengadaan bahan baku, R/C rasio Bandrek Hanjuang is a special instant drink from West Java which has been in the national and international market. However, due to the increase of demand, the company was not be able to provide the dried red ginger as raw material, due to the limited resources. The aim of this research is to analyze the properness of bandrek production using two ways of making; self-producing or buying from other party using analysis ratio R-C. This research was conducted in CV. Cihanjuang Inti Teknik from March to September 2015. The method used in this research is qualitative descriptive method; that is; a research which is conducted to give systematic information concerning the object of the research and to analyze from the obtained data. The finding of this research showed that with equal income, self-producing of dried red ginger had higher R/C value compared to buying from other party. This illustrates that the self-producing required lower production cost, therefore the company is able to get higher income. In conclusion, self-producing of dried red ginger is likely more preferable to be conducted. Keywords : bandrek, red ginger, properness, raw material making, R/C ratio

scholarly journals OIL CAKES AS SUBSTRATE FOR IMPROVED LIPASE PRODUCTION IN SOLID STATE FERMENTATION

2011 ◽  
Vol 3 (1) ◽  
pp. 71-73 ◽  
Author(s):  
JAYA BHAGAT ◽  
◽  
PRATYOOSH SHUKLA ◽  
SMRITI SHRIVASTAVA
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Lipase Production ◽  
Oil Cakes

scholarly journals Hydromechanical Fuel Control for Portable Gas Turbine Generator Sets

1968 ◽  
Author(s):  
G. E. Parker
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Production Cost ◽  
Light Weight ◽  
Turbine Generator ◽  
Design Problems ◽  
Ambient Temperatures ◽  
High Speeds ◽  
Wide Range ◽  
Generator Sets

Controls for small lightweight gas turbines present some unique design problems. The requirements for small size, light weight, ability to rotate at high speeds to save reduction gearing, and low production cost conflict with the requirements for reasonably accurate control of very small fuel flows and the scheduling of a wide range of hydrocarbon fuels over a wide range of ambient temperatures. This paper discusses in some detail the design of such a control and the satisfactory results obtained.

scholarly journals Volatile Oils ofNepeta tenuifolia(Jing Jie) as an Alternative Medicine against Multidrug-Resistant Pathogenic Microbes

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Yi-Hsuan Lee ◽  
Chao-Min Wang ◽  
Po-Yu Liu ◽  
Ching-Chang Cheng ◽  
Zong-Yen Wu ◽  
...  
Keyword(s):  
Essential Oils ◽  
In Vitro Study ◽  
Multidrug Resistant ◽  
Clinical Isolates ◽  
Gram Negative ◽  
E Coli ◽  
Wide Range ◽  
Main Component ◽  
Reference Strains

Essential oils from the dried spikes ofNepeta tenuifolia(Benth) are obtained by steam distillation. Pulegone was identified as the main component in the spikes ofN. tenuifoliathrough analysis, with greater than 85% purity obtained in this study. The essential oils are extremely active against all Gram-positive and some Gram-negative reference bacteria, particularlySalmonella enterica,Citrobacter freundii, andEscherichia coli. The minimum inhibitory concentration was found to be between 0.08 and 0.78% (againstS. enterica), 0.39 and 0.78% (againstC. freundii), and 0.097 and 0.39% (againstE. coli), whereas the minimum bactericidal concentration varied in range from 0.097% to 1.04%. In general, the essential oils show a strong inhibitory action against all tested reference strains and clinical isolates. However, the antibacterial activity of EOs against bothPseudomonas aeruginosareference strains and clinical isolates was relatively lower than other Gram-negative pathogens. The essential oils ofN. tenuifoliaalso displayed bactericidal activities (MBC/MIC < 4) in this study. These findings reflect the bactericidal activity of the essential oils against a wide range of multidrug-resistant clinical pathogens in an in vitro study. In addition, we propose the fragmentation pathways of pulegone and its derivatives by LC-ESI-MS/MS in this study.

scholarly journals Involute the reactivity of persulfate with zero-valent iron for enhanced removal of arsenic (V) in aspect involvement of Fe2+ or Fe3+

2019 ◽  
Vol 80 (6) ◽  
pp. 1031-1041
Author(s):  
Yue Wang ◽  
Tianying Chang ◽  
Zhengchao Zhang ◽  
Kaijie Pei ◽  
Jie Fu ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Sewage Treatment ◽  
Industrial Effluents ◽  
Ferrous Ions ◽  
Metals Removal ◽  
Wide Range ◽  
Pseudo Second Order ◽  
Timely Fashion ◽  
Co Precipitation ◽  
Removal Of Arsenic

Abstract Being a fundamental issue regarding sewage treatment, heavy metals removal from industrial effluents has been subject to intense scrutiny in both the academic and practical worlds. The removal of pentavalent arsenic (As(V)), one of the most poisonous pollutants, was investigated using a sodium persulfate and iron powder system activated by ferrous ions (Fe2+-ZVI-PS). As(V) could be effectively removed by an Fe2+-ZVI-PS system in a timely fashion (minute scale) with high removal rates (more than 90.0%) over a wide range of pH (1–9) and concentration (20–100 mg/L). The removal of As(V) by the Fe2+-ZVI-PS system integrated favorably with the pseudo-second-order reaction kinetics. Researches on X-ray photoelectron spectroscopy (XPS) demonstrated that the Fe2+-ZVI-PS system enables the removal of As(V) through the process of co-precipitation and adsorption. Our findings thus emphasized that the Fe2+-ZVI-PS system should be an effective trigger to purifying arsenic from the environment. Our results indicated that the Fe2+-ZVI-PS system could be an effective candidate for remediation of arsenic in the environment.

scholarly journals New Diarylheptanoid from Garuga pinnata Roxb

2013 ◽  
Vol 61 (2) ◽  
pp. 131-134 ◽  
Author(s):  
Mst Taslima Khatun ◽  
M. Mahboob Ali Siddiqi ◽  
Al-Mansur MA ◽  
MH Sohrab ◽  
AFM Mustafizur Rahman ◽  
...  
Keyword(s):  
Brine Shrimp ◽  
Microbial Growth ◽  
Stem Bark ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Disc Diffusion ◽  
Disc Diffusion Method ◽  
Gram Negative ◽  
Wide Range ◽  
Bacteria And Fungi

9´-Desmethylgaruganin I has been isolated from the dichloromethane extract of the stem bark of Garuga pinnata Roxb. The crude extract was screened for antimicrobial activity against a wide range of gram-positive and gram-negative bacteria and fungi by disc diffusion method and cytotoxicity by brine shrimp lethality bioassay. The dichloromethane extract showed moderate inhibitory activity to microbial growth and weak cytotoxicity having LC90 25.703?g-mL–1 DOI: http://dx.doi.org/10.3329/dujs.v61i2.17058 Dhaka Univ. J. Sci. 61(2): 131-134, 2013 (July)

scholarly journals By-products of fruits processing as a source of phytochemicals

2009 ◽  
Vol 15 (4) ◽  
pp. 191-202 ◽  
Author(s):  
Sonja Djilas ◽  
Jasna Canadanovic-Brunet ◽  
Gordana Cetkovic
Keyword(s):  
Organic Acid ◽  
Dietary Fibre ◽  
Nutritional Value ◽  
Food Additives ◽  
Waste Materials ◽  
Citrus Fruits ◽  
Wide Range ◽  
Legal Restrictions ◽  
Valuable Compounds ◽  
By Products

The processing of fruits results in high amounts of waste materials such as peels, seeds, stones, and oilseed meals. A disposal of these materials usually represents a problem that is further aggravated by legal restrictions. Thus new aspects concerning the use of these wastes as by-products for further exploitation on the production of food additives or supplements with high nutritional value have gained increasing interest because these are high-value products and their recovery may be economically attractive. It is well known that by-products represent an important source of sugars, minerals, organic acid, dietary fibre and phenolics which have a wide range of action which includes antitumoral, antiviral, antibacterial, cardioprotective and antimutagenic activities. This review discusses the potential of the most important by-products of apple, grape and citrus fruits processing as a source of valuable compounds. The relevance of this topic is illustrated by a number of references.

scholarly journals Production of Enzymes from Agroindustrial Wastes by Biosurfactant-Producing Strains of Bacillus subtilis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Francisco Fábio Cavalcante Barros ◽  
Ana Paula Resende Simiqueli ◽  
Cristiano José de Andrade ◽  
Gláucia Maria Pastore
Keyword(s):  
Bacillus Subtilis ◽  
Culture Medium ◽  
Synthetic Medium ◽  
Lipase Production ◽  
Industrial Processes ◽  
Technical Literature ◽  
Wide Range ◽  
Cassava Wastewater ◽  
Agroindustrial Wastes ◽  
Better Than

Bacteria in the genus Bacillus are the source of several enzymes of current industrial interest. Hydrolases, such as amylases, proteases, and lipases, are the main enzymes consumed worldwide and have applications in a wide range of products and industrial processes. Fermentation processes by Bacillus subtilis using cassava wastewater as a substrate are reported in the technical literature; however, the same combination of microorganisms and this culture medium is limited or nonexistent. In this paper, the amylase, protease, and lipase production of ten Bacillus subtilis strains previously identified as biosurfactant producers in cassava wastewater was evaluated. The LB1a and LB5a strains were selected for analysis using a synthetic medium and cassava wastewater and were identified as good enzyme producers, especially of amylases and proteases. In addition, the enzymatic activity results indicate that cassava wastewater was better than the synthetic medium for the induction of these enzymes.

Sign in / Sign up

Export Citation Format

Share Document