• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2001.06a
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• pp.135-135
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• 2001

• FLOWER RESEARCH JOURNAL
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• v.19 no.4
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• pp.206-211
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• 2011

This study was carried the effect of transportation conditions and plant growth regulator on the maintenance of freshness and quality of cut Chrysanthemum 'Baekma'. The quality of cut chrysanthemum 'Baekma' which were stored at $5^{\circ}C$ was better than those of stored at $20^{\circ}C$ and control. When cut mum 'Baekma' was transported stacking boxes with vertical condition after dipping in distilled water, flowering degree, flower size, days to flower appearing degree, and bent neck were delayed. Flowering degree was delayed by $10mg/L^{-1}$ uniconazole spraying, The days to bent neck was delayed by 1,000x daminozide spraying.

• Food Science and Preservation
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• v.5 no.3
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• pp.231-238
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• 1998

The effects of temperature(0, 5, 10 $^{\circ}C$), sawdust removal in root part and packaging conditions on the respiration and keeping qualities were evaluated. Higher respiratory activity, weight loss and stipe elongation were observed at higher temperature. Removal of sawdust part slowed down the rate of stipe elongation with little effect on the respiration rates, and therefore improve the quality preservation. The modified atmosphere packaging of 100g mushroom using hermetically sealing by 30 $\mu\textrm{m}$ polypropylene (CPP) and low density polyethylene (LDPE) films were effective in preserving the quality such as visual appearance and Hunter L value, and reducing weight loss at 0$^{\circ}C$, 5$^{\circ}C$ and 10$^{\circ}C$ compared to perforated packages.

• Food Science and Preservation
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• v.11 no.4
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• pp.478-484
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• 2004

Freshness maintenance of polyethylene packaging film containing surface-modified zeolite was investigated depending on the nature of substituted cations and cationic surfactants. Freshness maintenance was designed to work by cation or cationic surfactant adsorbed onto the zeolite surface by ion-exchange method. Cationic surfactants such as DODAB (n-dodecyltrimethylammonium bromide), CTAB (n-cetyltrimethylammonium bromide), and DHAB (n-dihexadecyldime-thylammonium bromide), and cations ($Ce^{3+},\;Al^{3+},\;Mg^{2+},\;Ca^{2+},\;Ag^{3+},\;Na^{1+}\;and\;Cu^{3+}$) were used. Surface-modified zeolite powder was compounded with LDPE to produce $20\;wt\%$ zeolite masterbatch (M/B), and the M/B was again blended with LDPE to get zeolite-containing LDPE films with 3, 5, $10\;wt\%$ of zeolite (width: 40 cm, thickness: $40\;{\mu}m$). Mechanical properties of zeolite-containing LDPE films generally decreased with increasing zeolite content. However, cationic surfactant-modified zeolite film showed the better mechanical properties compared to cation-modified zeolite film. As for the freshness maintenance, the zeolite-containing films modified with cationic surfactants or cations ($Al^{3+},\;Ag^{3+}$) showed the best performance.

• The monthly packaging world
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• s.282
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• pp.62-66
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• 2016

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.04a
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• pp.134.2-135
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• 2003

채소류는 생리적인 특성상 수확후 저장 및 유통되는 동안에 호흡작용, 증산작용 등의 작용이 활발해질 뿐만 아니라 곰팡이를 비롯한 식물병이 미생물의 오염 및 성장으로 부패현상을 일으키고 채소류 자체의 경도가 저하되며, 수분, 비타민, 유기산, 당분, 색소함량 등이 떨어져서 외관, 맛 신선도 등의 감소하게 된다. 본 연구에서는 채소류(오이, 호박, 방울토마토)의 선도를 연장하기 위한 저장조건을 실시하여 최적 습도 및 온도범위를 결정하였고, 이를 토대로 하여 시설채소산물을 습도조절이 가능한 원적외선 방사체 저장고(5~8$^{\circ}C$의 온도와 90% 습도유지)에 저장하면서 무처리구인 대조구와 비교하여 저장중 시료의 중량손실율, Ascorbic acid함량, 총균수(PCA사용법에 의거), pH의 변화를 측정하였고, 시료의 표면색도는 색도계(Minolta CR-300, Japan)를 사용하여 Hunter의 L, a, b값을 측정하였다. 이 결과, 채소류의 선도유지기간이 연장되는 것을 확인하였고, 중량손실율은 원적외선 방사체 저장고에 저장한 채소류가 중량손실율이 대조구에 비하여 낮게 나타났다. 따라서 습도조절이 가능한 원적외선 방사체 저장고에 채소류를 저장함으로서 채소류의 수분손실을 방지할 수 있음을 확인할 수 있었으며, 일정기간동안 원적외선 방사체 저장고에 저장함으로써 ascorbic acid함량의 감소를 대조구에 비하여 낮은 비율로 억제할 수 있었다. 총균수의 경우 채소류 시험구에서 원적외선 방사체 저장고에서 저장할수록 오염미생물의 총균수가 낮게 나타났다. 표면색도의 경우, a값은 모든 시험구에서 감소하였으며 원적외선 방사체 시험구에 비하여 대조구 저장시료의 표면색도가 청색도를 증가시키는 변화를 관찰할 수 있었고, b값은 시료간에 유의성 있는 차이없이 다소 증가하는 것으로 나타났다. 부패율은 수분 함유율이 높은 채소류일수록 원적외선 방사체 저장시설을 이용하는 경우, 부패율을 낮게 유지할 수 있었다. 따라서, 원적외선 방사체 저장시설내에 오이, 호박 및 방울토마토와 같은 채소류를 저온고습도상에서 저장할 경우, 채소류의 품질변화를 최소화 할 수 있어 갓 수확한 채소류의 선도유지기간을 연장할 수 있는 저장법이 될 수 있음을 확인하였다.

• Food Science and Preservation
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• v.22 no.1
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• pp.154-157
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• 2015

To maintain the freshness and to prevent browning of cut Kimchi cabbages, the effect of the cutting process using a ceramic knife under $N_2$ blowing on the quality of the cut Kimchi cabbages was investigated. Kimchi cabbages cut with a ceramic knife under $N_2$ gas blowing conditions (NC) were stored at $5^{\circ}C$ for 7 days, and their weight reduction ratio and the browning degree and appearance were compared with those of the control treatment samples (OS; cut with a stainless steel knife under normal air, OC; cut with a ceramic knife under normal air). The weight reduction ratios were 0.07~0.13%, and the NC treatment showed the lowest reduction ratio among all the treatments (p<0.05). The Hunter L values increased, but the a and b values decreased after 5-day storage in all the treatments. The NC treatment had higher L values but lower a and b values than the OS and OC treatments. The browning degrees by Hunter color value, PPO activity, and appearances were the least in the NC treatment (p<0.05). The cutting process with a ceramic knife under $N_2$ blowing could be applied to the cutting of vegetable products and for minimal fruit processing.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.19 no.2
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• pp.87-94
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• 2013

To investigate the effects of functional MA films (FMA) masterbatched by zeolite powder treated with 1 N HCl, 0.5 N NaCl solution and anti-fogging agent (NA) compared with control on the freshness extension of 'Fuji' apples during storage at $15^{\circ}C$. Preference, weight loss, total ascorbic acid, sugar content, acidity, change of gas composition in package were measured. After 150 days of storage, the weight loss of control (L) apples was 1%, that of apple in FMA film (NA) was 1.5% after 150 days. Total ascorbic acid content of apples in control (L) after 150 days was 2.09 mg%, those of apple in FMA film (NA) was 2.72 mg%. The titratable acidity of apple in FMA film was higher than that in control, while soluble solids content of apples in FMA film was lower than that in control after 150 days. Ethylene gas adsorbability in control was 192.2 ppm and those in FMA film was 141.4 ppm after 150 days. Overall, apples in FMA film was better than that of control. It was verified that apples packed with LLDPE film (control) lasted about 130days, while those with FMA films lasted about 170 days. Also, FMA films treated with anti-fogging agent few different compare to nontreated film, but commerdity on the display in market was considered higher than that of non-treated anti-fogging agent.

• The monthly packaging world
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• s.58
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• pp.97-99
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• 1998

• The monthly packaging world
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• s.157
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• pp.104-107
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• 2006