• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
• /
• v.7 no.1
• /
• pp.25-30
• /
• 2001

The purpose of this study was to examine how can we keep the freshness of peeled chestnuts in distribution process. The 30 minutes impregnation treatment at the preservation solution of 0.3% consistency showed a good result. The solution treatment prevented from surface yellowing and quality degradation of peeled chestnuts. And, in vaccum packaging after treating chemicals surface drying was faster than the other packaging from 7th day. A vitamin C treatment was no effective to restrain the growth of microbials.

• Journal of Conservation Science
• /
• v.19
• /
• pp.31-42
• /
• 2006

There are many materials used in restoring missing parts of pottery and ceramics and they are used according to the each quality of materials. In our research we tried to find the new repair materials to solve many problems exposed in the existing repair materials. As a result, we made new repair materials that we properly put oven bake clays into repair epoxy putty which is being used as oven bake clays for a long time. Fortunately, through testing yellowing, vickers hardness, coloring and heating temperature, We could get an idea that new repair materials would be the best materials in the efficiency of restoration, yellowing, and coloring.

• Korean Journal of Agricultural Science
• /
• v.42 no.4
• /
• pp.293-297
• /
• 2015

This study was conducted to evaluate the influence of feeding leaf positions on the growth, net formation of fruits, and occurrence of leaf yellowing symptoms (LYS) in muskmelon plants. Plants having five or ten more leaves above the fruit-bearing node produced the greater biomass than those of plants having equal or five less leaves above the fruit-bearing node. The number of leaves above the fruit-bearing node also influenced on the occurrence of LYS. The number of plants with LYS decreased as the number of leaves borne on the nodes above the fruit-bearing node increased. The LYS infected ratio of BL-5 treatment were the greatest, while fruit weight of BL+5 treatment were the greatest among all the tested treatments. In addition, the net formation of BL-5 treatment showed the poorest. Results indicated that maintaining the higher number of leaves over the fruit-bearing node might be feasible the practical method for coping physiological damages from yellowing symptoms.

• The Plant Pathology Journal
• /
• v.23 no.3
• /
• pp.151-154
• /
• 2007

Phytoplasma was identified from leaf lettuce (Lactuca sativa) cultivated in commercial green-house in Korea. Diseased leaf lettuce revealed proliferation of shoots, and yellowing and shrinking of leaves (lettuce proliferation-K). Polymerase chain reaction (PCR) with universal primer pair P1/P6, and aster yellows (AY) specific primer pair R16F1/R1 amplified 1.5kb and 1.1kb length of DNA fragments, respectively. Nucleotide sequences of 16S rRNA gene were determined (Gen Bank accession no EF489024). Phylogenetic analysis of 16S rDNA showed the closest relationship with AY phytoplasma (GenBank accession no. AY389822 and AY389826), indicating that lettuce proliferation-K is a member of AY. Phytoplasma bodies were detected in phloem sieve tubes of diseased lettuce by transmission electron microscopy. The structures had round or pleomorphic shapes with a diameter of 130-300nm. Phylogenetic analysis of 16S rRNA gene, microscopic observation of phytoplasma bodies and symptomatology indicated that lettuce proliferation-K is caused by phytoplasma in the AY group. This is the first report of phytoplasma disease in lettuce in Korea.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2006.11a
• /
• pp.21-21
• /
• 2006

• Journal of the Korean Home Economics Association
• /
• v.8 no.1
• /
• pp.36-41
• /
• 1970

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
• /
• v.13 no.1
• /
• pp.5-8
• /
• 2007

The effects of packaging conditions on freshness extension of cucumber were investigated during 24-day storage temperatures $18^{\circ}C$ and $10^{\circ}C$. The storage life of cucumbers was influenced by both packaging methods (corrugated cardboard vs EPS box) and temperatures during storage. The fresh weigh, vitamin C content and Chlorophyll of cucumbers were decreased, while yellowing of cucumber peel was increased during storage. The change of vitamin C content was influenced by both packaging method and temperature during storage. The EPS box and low temperature were revealed to be effective treatments to extend the storability or cucumber fruit.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.7 no.1
• /
• pp.11-16
• /
• 1983

Variance of whiteness after graft copolymerization of acrylonitrile, methylmethacrylate and acrylamide onto bleached cellulose using Ce(IV) salt as initiators and the effect of homopolymer on the grafted fibers by photo-irradiation were studied. Also, the development of Yellowing were determined after carbon-arc radiation in a Fade-o-meter. The results were as follows: (1) Variation of whiteness of grafted cellulose fibers were influenced by graft-ratio, Inorganic-Organic Balance (IOB) of functional group in used monomers and adhering homopolymers on the grafed fibers. (2) Yellowing was not affected by the concentration of Ceric Ammonium Nitrate directly during reaction (eg. 0.008>0.006>0.014 M).

• Textile Coloration and Finishing
• /
• v.5 no.2
• /
• pp.91-98
• /
• 1993

The silk fabrics were treated with color solution extracted from leaf of Camellia. The depression effect of destruction and yellowing of silk treated with color solution, shift of UV-VIS spectra of color solution, color difference of silk fabrics by dyeing with acid dyes and drycleaning fastness of silk treated with color solution were studied. UV-VIS spectra appeared to hypsochromic shift by irradiation. The decrease of tensile strength and the elongation of the silk treated with color solution showed depressed but those of untreated silk increased by irradiation. The yellowness index of silk treated with color solution showed a little change by irradiation. The color difference after dyeing with several acid dyes on treated and untreated silk showed not remarkable changes. Dsrycleaning fastness of silk treated by color solution was excellent.

• Journal of the Korean Society of Tobacco Science
• /
• v.5 no.2
• /
• pp.9-15
• /
• 1983

The effect of leaf dehydration process and air flow capacity of bulk curing on physical properties and composition of cured leaves was studied, respectively, during flue- curing. Cured leaves from excessive moisture during yellowing stage and those from rapid dehydration Process inevitably during later stages, tend towards lower equilibrium moisture contents, higher shatter index, hither protein nitrogen, and leaf scalding or deterioration of Beaves with redish cast. Early dehydration at the yellowing stage re suited in increasing of p Bamitic, stearic, linoleic, and linolenic acid contents, but showed reduction of brightness difference between upper and lower surface of the cured leaves, Leaf surface lipid decreased with the progress of curing stages, more conspicuously during later stage. Lowering air flow capacity of fan by 50oye during stem drying stage resulted in increasing of leaf surface lipid and 25oye decreasing of electric power consumption , but curing period and kerosene consumption were not affected.