Extraction of protein and amino acids from deoiled rice bran by subcritical water hydrolysis

Sereewatthanawut, Issara; Prapintip, Surawit; Watchiraruji, Katemanee; Goto, Motonobu; Sasaki, Mitsuru; Shotipruk, Artiwan

doi:10.1016/j.biortech.2006.12.030

Cited by 296 publications

(149 citation statements)

References 15 publications

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“…To this end, we selected four kinds of lactic acid bacteria ( Pediococcus acidilactici , Streptococcus thermophilus , Lactobacillus casei , and Bifidobacterium adolescentis ) with distinguishing shapes (spherical, chain shaped, rod shaped, and “Y” shaped) and treated them with the hydrothermal process for the investigation of dendritic cell (DC) uptake profiles. After optimized hydrothermal treatment (Figure S1, Supporting Information), fragile cellular components (e.g., cell membrane, intracellular protein, and genetic materials) and pretreatment chemical reagents such as formaldehyde and Triton X‐100 were completely hydrolyzed and removed,16 whereas the cell wall framework, with its solid structure, could be well preserved 17. So, the obtained biocompatible bacterial candidates (Figure 1b) not only kept their original shapes (Figure 1a) but also had similar surface properties (Table S1, Supporting Information), which paved the way for subsequent comparative investigation.…”

Section: Resultsmentioning

confidence: 99%

Biomimetically Engineered Demi‐Bacteria Potentiate Vaccination against Cancer

Qing

Ding

et al. 2017

Advanced Science

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Failure in enhancing antigen immunogenicity has limited the development of cancer vaccine. Inspired by effective immune responses toward microorganisms, demi‐bacteria (DB) from Bacillus are engineered as carriers for cancer vaccines. The explored hydrothermal treatment enables the Bacillus to preserve optimal pathogen morphology with intrinsic mannose receptor agonist. Meanwhile, the treated Bacillus can be further endowed with ideal hollow/porous structure for efficient accommodation of antigen and adjuvant, such as CpG. Therefore, this optimal engineered nanoarchitecture allows multiple immunostimulatory elements integrate in a pattern closely resembling that of bacterial pathogens. Such pathogen mimicry greatly enhances antigen uptake and cross‐presentation, resulting in stronger immune activation suitable for cancer vaccines. Indeed, DB‐based biomimetic vaccination in mice induces synergistic cellular and humoral immune responses, achieving potent therapeutic and preventive effects against cancer. Application of microorganism‐sourced materials thus presents new opportunities for potent cancer therapy.

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Section: Resultsmentioning

confidence: 99%

Biomimetically Engineered Demi‐Bacteria Potentiate Vaccination against Cancer

Qing

Ding

et al. 2017

Advanced Science

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“…One solution to this problem involves using subcritical water: liquid water at 100-374°C but not exceeding 22.05 MPa (Sereewatthanawut et al, 2008). Altering the temperature and pressure of subcritical water changes its polarity and allows it to dissolve nonpolar species such as aliphatic hydrocarbons much more efficiently than under normal conditions Aubrey et al, 2008).…”

Section: The Immunological Approach To Detection Of Organic Speciesmentioning

confidence: 99%

Searching for Life on Mars: Degradation of Surfactant Solutions Used in Organic Extraction Experiments

et al. 2014

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Life-detection instruments on future Mars missions may use surfactant solutions to extract organic matter from samples of martian rocks. The thermal and radiation environments of space and Mars are capable of degrading these solutions, thereby reducing their ability to dissolve organic species. Successful extraction and detection of biosignatures on Mars requires an understanding of how degradation in extraterrestrial environments can affect surfactant performance. We exposed solutions of the surfactants polysorbate 80 (PS80), Zonyl FS-300, and poly[dimethylsiloxane-co-[3-(2-(2-hydroxyethoxy)ethoxy)propyl]methylsiloxane] (PDMSHEPMS) to elevated radiation and heat levels, combined with prolonged storage. Degradation was investigated by measuring changes in pH and electrical conductivity and by using the degraded solutions to extract a suite of organic compounds spiked onto grains of the martian soil simulant JSC Mars-1. Results indicate that the proton fluences expected during a mission to Mars do not cause significant degradation of surfactant compounds. Solutions of PS80 or PDMSHEPMS stored at -20°C are able to extract the spiked standards with acceptable recovery efficiencies. Extraction efficiencies for spiked standards decrease progressively with increasing temperature, and prolonged storage at 60°C renders the surfactant solutions ineffective. Neither the presence of ascorbic acid nor the choice of solvent unequivocally alters the efficiency of extraction of the spiked standards. Since degradation of polysorbates has the potential to produce organic compounds that could be mistaken for indigenous martian organic matter, the polysiloxane PDMSHEPMS may be a superior choice of surfactant for the exploration of Mars.

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“…The dissociation constant of water varies with temperature; this property can be utilized to alter the extraction property of a number of substances. Accordingly, subcritical water has been employed to extract various substances, such as essential oils, proteins, xanthones, anthraquinones, flavonoids, and low-molecular-weight phenolic constituents (Buranov & Mazza 2009, Eikani et al 2007, Ho et al 2007, Kim et al 2010, Kulkarni et al 2008, Ozel et al 2003, Petersson et al 2010, Pongnaravane et al 2006, Pourali et al 2010, Prommuak et al 2008, Sereewatthanawut et al 2008, Srinivas et al 2010. Subcritical water can function as an acid catalyst or base catalyst in chemical reactions because its dissociation constant exceeds that of ambient water; subcritical water dissociates into hydrogen and hydroxyl ions to a greater extent, thereby accelerating the reactions (Wiboonsirikul et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Subcritical Water Extraction of Low-molecular-weight Phenolic Compounds from Oil Palm Biomass

Kawamura

Saary

Hashim

et al. 2014

JARQ

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Subcritical water extraction of low-molecular-weight phenolic compounds from oil palm biomass (trunk, bark, petiole, rachis, leaves, empty fruit bunch fiber, midrib spine leaflets, stalk of fruit bunches, flesh, kernel shells, and albumen) was conducted. It was elucidated that gallic acid, protocatechuicaldehyde, p-hydroxybenzoic acid, p-hydroxybenzaldehyde, vanillic acid, syringic acid, vanillin, syringaldehyde p-coumaric acid and ferulic acid, all of which could be used as 2-pyrone-4,6-dicarboxylic acid (PDC) precursors, were contained in all parts of oil palm, although their composition differed. The peak yield of p-hydroxybenzoic acid was obtained among the PDC precursors. With regard to extraction conditions, temperature: 200°C, time: 20-60 min, and liquor ratio: 50-125 were the most efficient. The kernel shell exhibited the highest yield of PDC precursors, followed by the trunk, empty fruit bunch fiber, and bark. The results of our study indicate the oil palm is a potentially valuable source of PDC precursors.

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Extraction of protein and amino acids from deoiled rice bran by subcritical water hydrolysis

Cited by 296 publications

References 15 publications

Biomimetically Engineered Demi‐Bacteria Potentiate Vaccination against Cancer

Biomimetically Engineered Demi‐Bacteria Potentiate Vaccination against Cancer

Searching for Life on Mars: Degradation of Surfactant Solutions Used in Organic Extraction Experiments

Subcritical Water Extraction of Low-molecular-weight Phenolic Compounds from Oil Palm Biomass

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