Value-added subcritical water hydrolysate from rice bran and soybean meal

Watchararuji, Ketmanee; Goto, Motonobu; Sasaki, Mitsuru; Shotipruk, Artiwan

doi:10.1016/j.biortech.2007.12.021

Cited by 176 publications

(109 citation statements)

References 14 publications

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“…After increasing the temperature, the protein yield was decreased. Simillar pattern was observed in scallop waste, soybean and freeze dried squid viscera (Tavakoli and Yoshida 2006;Watchararuji et al 2008;Uddin et al 2010). This may suggest that protein molecules were decomposed to water soluble low molecular weight organic compound at elevated temperature.…”

Section: Discussionmentioning

confidence: 95%

“…Where, W 0 is the total amount of squid muscle introduced in reactor, which is nearly 6 g. It was found that the hydrolysis Watchararuji et al 2008;Park et al 2012 for subcritical water hydrolysis of rice bran and Laminaria japonica. Generally, protein normally has low solubility in water at ambient temperature due to strong aggregation through hydrophobic interactions.…”

Section: Discussionmentioning

confidence: 99%

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Recovery of functional materials with thermally stable antioxidative properties in squid muscle hydrolyzates by subcritical water

Asaduzzaman

Chun

2013

J Food Sci Technol

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Subcritical water hydrolysis was carried out to produce functional materials from squid muscle using a batch reactor. The reaction temperatures and pressures for hydrolysis of thermal dried squid muscle were maintained from 160 to 280°C and 6 to 66 bar for 3 min. The ratio of material to water for hydrolysis was 1:25 (w/v) and it was stirred at 140 rpm. Hydrolysis yield was increased after increasing the temperature and pressure while the protein in hydrolyzate decreased with the rise of temperature. The reducing sugar yield was high at temperature 220°C in subcritical water hydrolysis of squid muscle. Low molecular weight peptides were found in all hydrolyzates by SDS-PAGE. The highest yield of free and structural amino acid in hydrolyzate was 421.53±1.24 and 380.58±2.25 mg/100 g, respectively at 250°C. All essential amino acids were identified in muscle hydrolyzates and it was high at 220°C. Among the essential amino acids, leucine was the most abundant. Antioxidative properties were found in all hydrolyzates and it was high at 220°C. More than 98±0.26 % ABTS antioxidant activity was retained in hydrolyzates after long time heat treatment.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Recovery of functional materials with thermally stable antioxidative properties in squid muscle hydrolyzates by subcritical water

Asaduzzaman

Chun

2013

J Food Sci Technol

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“…It is a staple food for over half of the world's population with approximately 95% of rice produced in Asia and about 600 million tons of rice produced annually worldwide. 17,18) Rice bran is the major by-product of rice milling process and accounts for nearly 8% of milled rice. Between 20-30% of produced rice bran is used for oil production, while the remaining rice bran is discarded or used as livestock feed and fertilizer.…”

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confidence: 99%

<i>In Vivo</i> Hair Growth-Promoting Effect of Rice Bran Extract Prepared by Supercritical Carbon Dioxide Fluid

Choi

Jeon²,

Moon³

et al. 2014

Biological & Pharmaceutical Bulletin

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The potential hair growth-promoting activity of rice bran supercritical CO 2 extract (RB-SCE) and major components of RB-SCE, linoleic acid, policosanol, γ-oryzanol, and γ-tocotrienol, were evaluated with the histological morphology and mRNA expression levels of cell growth factors using real-time reverse transcriptase-polymerase chain reaction (PCR) in C57BL/6 mice. RB-SCE showed hair growth-promoting potential to a similar extent as 3% minoxidil, showing that the hair follicles were induced to be in the anagen stage. The numbers of the hair follicles were significantly increased. In addition, mRNA expression levels of vascular endothelial growth factor (VEGF), insulin-like growth factor-1 (IGF-1), and keratinocyte growth factor (KGF) were also significantly increased and that of transforming growth factor-β (TGF-β) decreased in RB-SCE-treated groups. Among the major components of RB-SCE, linoleic acid and γ-oryzanol induced the formation of hair follicles according to examination of histological morphology and mRNA expression levels of cell growth factors. In conclusion, our results demonstrate that RB-SCE, particularly linoleic acid and γ-oryzanol, promotes hair growth and suggests RB-SCE can be applied as hair loss treatment. Key words rice bran supercritical CO 2 extract; hair growth-promoting activity; in vivoAlthough hair loss is not a mortal disorder, it has a great impact on a person's self-respect, mental health, and overall quality of life. Approximately 50-60 hairs are normally lost per day, which does not have a noticeable effect on appearance; however, excess loss (>100) results in baldness. Androgenetic alopecia is the most common type of hair loss, affecting millions of both men and women.1) There are many causes of hair loss in men and women, including diseases, nutritional deficiency, aging, hormone imbalance, and stress. Androgenetic alopecia may occur as early as the teenage years, but typically begin in the later decades of life. 2,3) Hair loss affects at least half of all men by the age of 50 and up to 70% of 70-year-old men. 4)

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Section: Introductionmentioning

confidence: 99%

“…Likewise, the treatment with supercritical carbon dioxide involves a great amount of carbon dioxide which is a predominant anthropogenic greenhouse gas. On the contrary, subcritical water treatment provides an environmentally friendly option for effective extraction of functional substances from food and agricultural wastes (Hata et al, 2008;Pourali et al, 2009;Watchararuji et al, 2008;Wiboonsirikul et al, 2007a;2007b).Subcritical water is water at over 100℃ that is compressed to maintain its liquid state below the critical point. The dielectric constant of water decreases from 80 to 27 with heating from room temperature to 250℃, which is similar to that of ethanol under ordinary pressure (Herrero et al, 2006;Miller and Hawthorne, 2000).…”

mentioning

confidence: 99%

Properties of Extract Obtained from Defatted Rice Bran by Extraction with Aqueous Ethanol under Subcritical Conditions

Chiou

Neoh

Kobayashi

et al. 2012

FSTR

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Defatted rice bran was treated with water or aqueous ethanol under subcritical conditions to recover materials with antioxidative activity. The extraction conditions, namely ethanol concentration (10 − 100% (v/v)), temperature (120 − 237℃) and time after attainment of a desired temperature (5 − 60 min), were studied. On the basis of the determinations of total carbohydrate, protein and phenolic contents, yield, DPPH radical scavenging activity, and antioxidative activity against oxidation of bulk linoleic acid, the extraction with 20% (v/v) ethanol at 237℃ for 5 min was concluded to be comparatively more efficient than that by subcritical water at the same extraction temperature for the same length of time.Keywords: defatted rice bran, extraction, subcritical water, antioxidative activity, ethanol *To whom correspondence should be addressed. E-mail: adachi@kais.kyoto-u.ac.jp IntroductionRice bran (Oryza sativa) is a byproduct from the rice milling or polishing process of brown rice to produce more visually appealing white rice. In Japan, about 0.88 million tons of rice bran are produced every year, which accounts for approximately 10% of the annual rice production of the country. Defatted rice bran finds uses in animal feeds and fertilizers, but still most of it is discarded as an agricultural waste. Despite its considerable contents of several useful substances, this resource has yet to be fully utilized. The dietary fiber from defatted rice bran was found to exhibit higher water-binding, fat-binding, and emulsifying capacities than that from sugar beet (Abdul-Hamid and Luan, 2000). Defatted rice bran also contains phenolic compounds that have antioxidative (Cuvelier et al., 1992;Graf, 1992), ultraviolet absorbing (Castelluccio et al., 1995), and anti-tumor activities (Han et al., 2001). Several extraction methods, namely the extraction by organic solvents such as methanol (Iqbal et al., 2005), ethanol (Kaneda et al., 2004), and acetone (Chung and Woo, 2001) and non-organic solvents such as supercritical carbon dioxide (Kim et al., 1999), have been the subject of study to recover these functional substances. The organic solvent extraction is a time consuming process and the extensive use of organic solvents also causes pollution. Likewise, the treatment with supercritical carbon dioxide involves a great amount of carbon dioxide which is a predominant anthropogenic greenhouse gas. On the contrary, subcritical water treatment provides an environmentally friendly option for effective extraction of functional substances from food and agricultural wastes (Hata et al., 2008;Pourali et al., 2009;Watchararuji et al., 2008;Wiboonsirikul et al., 2007a;2007b).Subcritical water is water at over 100℃ that is compressed to maintain its liquid state below the critical point. The dielectric constant of water decreases from 80 to 27 with heating from room temperature to 250℃, which is similar to that of ethanol under ordinary pressure (Herrero et al., 2006;Miller and Hawthorne, 2000). At high temperatures, the substantially inc...

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Value-added subcritical water hydrolysate from rice bran and soybean meal

Cited by 176 publications

References 14 publications

Recovery of functional materials with thermally stable antioxidative properties in squid muscle hydrolyzates by subcritical water

Recovery of functional materials with thermally stable antioxidative properties in squid muscle hydrolyzates by subcritical water

<i>In Vivo</i> Hair Growth-Promoting Effect of Rice Bran Extract Prepared by Supercritical Carbon Dioxide Fluid

Properties of Extract Obtained from Defatted Rice Bran by Extraction with Aqueous Ethanol under Subcritical Conditions

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