Environmentally friendly wood preservatives formulated with enzymatic-hydrolyzed okara, copper and/or boron salts

Ahn, Sye Hee; Oh, Sei Chang; Choi, In‐Gyu; Han, Gyu-Seong; Kim, Ki-Woo; Yoon, Young-Ho; Yang, In

doi:10.1016/j.jhazmat.2010.01.128

Cited by 52 publications

(27 citation statements)

References 11 publications

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“…Huge quantities of okara are produced worldwide. In Japan about 800,000 t, in Korea approximately 310,000 t and in China about 2,800,000 t of okara are produced from the tofu industry every year (Ohno et al 1993;Ahn et al 2010). These huge quantities of okara produced annually pose a significant disposal problem.…”

Section: Introductionmentioning

confidence: 99%

Production and evaluation of breakfast cereals from blends of acha and fermented soybean paste (okara)

Mbaeyi-Nwaoha

Uchendu

2015

J Food Sci Technol

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Breakfast cereals was formulated from blends of acha and fermented okara (soybean residue). Acha grains were cleaned, winnowed, washed, dried (at 50°C for 4 h) and milled into flour. Okara was processed from soybean seed through the stepwise procedure of cleaning, soaking, washing, milling and sieving. The residue was divided into five portions, fermented differently for 0, 12, 24, 36, and 48 h and then dried at 50°C for 6 h. Acha flour (UFAC) was milled and blended at 50, 60, 70, 80, 90, 100 % ratio with milled okara flour. Functional properties (bulk density, water absorption capacity, swelling capacity, wettability, viscosity and particle size distribution, microbial load, and proximate composition were carried out on the individual flour samples. The blended flours were conditioned, partially heat treated (for 10 min

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Section: Introductionmentioning

confidence: 99%

Production and evaluation of breakfast cereals from blends of acha and fermented soybean paste (okara)

Mbaeyi-Nwaoha

Uchendu

2015

J Food Sci Technol

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“…It is usually treated with chromated copper arsenate (CCA), ACQ, etc. (Shi et al 2007), but the toxic materials released from wood treated with CCA are dangerous to human health and the environment and have generated a lot of controversy (Weis et al 1998;Ahn et al 2010). We therefore attempted to use plant extracts for wood protection Nicholas 2000, 2002).…”

Section: Decay Test Wood Impregnation With Extractsmentioning

confidence: 99%

Decay Resistance of Wood Treated with Extracts of Cinnamomum camphora Xylem

Quan¹,

Lin²,

Liu³

2013

BioResources

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Four different extracts were obtained by extracting Cinnamomum camphora xylem with hot water, methanol, ethyl acetate, and chloroform. Thereafter, wood (Masson pine) was impregnated with these different extracts, and the decay resistance performance of the wood treated with the extracts was studied. The results showed that the mass loss of wood treated with 4% ammoniacal copper quats (ACQ), 4% boric acid, 4% camphor, and extracts made with 10% water, 10% methanol, 10% ethyl acetate, and 10% chloroform were 1.78%, 5.7%, 13.08%, 40.85%, 9.39%, 18.66%, and 21.45%, respectively. The samples impregnated with 4% ACQ, 4% boric acid or 10% methanol extract could meet the demand of degree I (LY/T 1283-2011) for preservation and showed strong resistance to fungal decay. The results from optical microscopy and SEM indicated that treated hyphae (methanol extracts) exhibited an obvious morphological change: the cell wall became rough, and the cell expanded, became twisted, and exhibited uneven growth of hyphae, indicating that the extracts affected the structure and function of the hyphae. The low number of hyphae present within the cell walls revealed that treatment with methanol extracts provided strong resistance to fungal decay.

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“…up to 1 year old shavings (2) crushed ≤ 1 mm without x UA cut off 9 years ago (3) crushed ≤ 1 mm without x monolithic without x BF up to 1 year old shavings (2) crushed ≤ 1 mm 16 kg/m³ x BA cut off 9 years ago (3) crushed ≤ 1 mm 16 kg/m³ x monolithic 16 kg/m³ x (1) Copper boron azole preservative CBA. (2) Shavings from Pinus sylvestris collected in BAM carpentry.…”

Section: Ufmentioning

confidence: 99%

“…(2) Shavings from Pinus sylvestris collected in BAM carpentry. (3) Trees (Pinus sylvestris) were cut off 9 years ago and conditioned at 20±2 °C and 65±5% relative humidity (cf.…”

Section: Ufmentioning

confidence: 99%

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Leaching from new generation treated wood: a chemical approach

Lupsea¹,

Mathies²,

Schoknecht³

et al. 2012

Environmental Impact

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Leaching of biocides from construction products is currently a research topic receiving attention from the European regulation authorities (CEN/TC 351). In this paper we have focused on the leaching behaviour of CBA (copper-borateazoles) treated Pinus sylvestris. To better define the chemistry of the leaching phenomena, two leaching tests (a static equilibrium test and a dynamic surface leaching test) have been carried out on untreated and treated wood, which offered more information about how the leaching of biocides interferes with other substances released from the wood structure. Eluates, in liquid and lyophilised form, were further analyzed by analytical methods. Organic (tebuconazole) and inorganic (Cu, B) biocides were quantified and several organic compounds have been identified (e.g. carboxylic acids, phenols, amines, etc.). Also, the total amount of phenols and of carboxylic groups was determined. Results on inorganic compounds are in accordance with previous studies made on treated wood. Furthermore, organic carbon, tebuconazole and other organic compounds' behaviour was extensively investigated. This study aims to complete existing leaching data and to help developing a chemical model for several biocides in wood, including Cu, B and tebuconazole.

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Environmentally friendly wood preservatives formulated with enzymatic-hydrolyzed okara, copper and/or boron salts

Cited by 52 publications

References 11 publications

Production and evaluation of breakfast cereals from blends of acha and fermented soybean paste (okara)

Production and evaluation of breakfast cereals from blends of acha and fermented soybean paste (okara)

Decay Resistance of Wood Treated with Extracts of Cinnamomum camphora Xylem

Leaching from new generation treated wood: a chemical approach

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