• Title/Summary/Keyword: jonathan

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Organic Acids Content of the Selected Korean Apple Cultivars (우리나라 사과 일부 품종의 유기산 함량)

  • Do, Young-Sook;Whang, Hea-Jeung;Ku, Ja-Eel;Yoon, Kwang-Ro
    • Korean Journal of Food Science and Technology
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    • v.37 no.6
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    • pp.922-927
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    • 2005
  • Total and individual organic acid contents of Malus domestica Borkh, cultivars, Tsugaru, Fuji Jonathan (Hong-Ok), and New Jonagold(Sin-Heung) apples, were investigated. Average titratable acidities measured by titration method and total organic acids content determined by HPLC were 241.64-444.52 and 364.23-680.80mg%, respectively. Average total organic acid contents were Jonathan 630.80mg%, New Jonagold 471.04mg%, Fuji 403.80mg%, and Tsugaru 364.23mg%, Contents of DL-malic, citric, fumaric, and quinic acid were 351.98 (Tsugaru)-579.88mg% (Jonathan), 2.14 (Fuji)-12.95mg% (Jonathan), 0.012 (Fuji)-0.060mg% (Jonathan), and 8.91 (Tsugaru)-14.20mg% (Fuji), respectively. Succinic acid was detected only from Jonathan (27.53mg%) and New Jonagold (5.20mg%), while maleic acid was not detected from all cultivars. Ratio of L-malic acid and DL-malic acid contents were 0.98-1.02 in all apple cultivars.

Effects of Combined Treatment with Ultrasound and Ascorbic Acid on the Storage Qualities of Fresh-cut 'Jonathan'Apples (초음파와 ascorbic acid의 병용처리가 신선절단 '홍옥' 사과의 저장 중 품질에 미치는 영향)

  • Jang, Ji-Hyun;Moon, Kwang-Deog
    • Food Science and Preservation
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    • v.17 no.2
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    • pp.202-207
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    • 2010
  • The effects of ultrasound treatment, in combination with ascorbic acid, on the quality of fresh-cut 'Jonathan' apples was investigated. Prepared apple slices were ultrasonicated in distilled water (US) or in 1%(w/v) ascorbic acid solution (UA) and the other samples were just dipped in 1%(w/v) ascorbic acid solution (AA). All samples were stored at$10^{\circ}C$ for 12 days. UA-treated samples showed high $L^{*}$ and hue values and low $a^{*}$, $b^{*}$, chroma, and ${\Delta}E$ value. Both control and US-treated samples showed considerable browning. A significant inhibition of polyphenol oxidase activity was observed after UA treatment. The level of total phenolics in UA-treated samples was higher on the day of treatment compared with other samples. Total soluble solids, pH, titratable acidity, and gas concentrations were similar in all samples. This study demonstrated that the simultaneous treatment of ultrasound and ascorbic acid was effective in preventing enzymatic browning of fresh-cut 'Jonathan' apples and maintaining total phenolics contents.

Changes in Firmness of Apples during Exposure to Room Temperature after CA storage (CA 저장한 사과의 상온방치시 경도변화)

  • Kim, Dong-Man;Shin, Hyun-Kyung
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.15 no.1
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    • pp.9-14
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    • 1986
  • Fuji and Jonathan apples were stored at cold room and at CA storage conditions of $3%O_2-2%CO_2$ for Jonathan and $4%O_2-3%CO_2$ for Fuji for 8 months, and then tranferred to air at $20^{\circ}C$, 70%RH to compare the some factors related to texture of the apples stored at different storage conditions during exposure at $20^{\circ}C$. Total pectin content and firmness of the apples reduced, considerably with concomitant increases of water-soluble pectin content and polygalacturonase activity during exposure at $20^{\circ}C$ after storage. And the changes were much more serious in the first 5 days than any other period and in the apples stored at cold room, especially in Jonathan than the apples stored at CA storage conditions. From the sensory test the apples stored at cold room maintained acceptable quality for 5days after removal from storage condition. The acceptability from the test was lenghtened for more than 5 days in Jonathan and more than 10 days for Fuji stored at CA storage conditions. when compared with those of the apples stored at cold room.

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Response of the International Community to the Boko Haram Insurgency in Nigeria

  • Frimpong, Isaac Owusu
    • Korea and Global Affairs
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    • v.3 no.1
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    • pp.221-244
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    • 2019
  • This paper attempts to analyze the role of Nigeria's current President Major (Rtd) Mahammudu Buhari and the immediate past President Goodluck Jonathan in dealing with the Boko Haram Insurgency in Nigeria. Nigeria has not been without its fair share of conflict. In fact, no decade of post-Independent Nigeria has been conflict free. With several coups, general strikes and a civil war, Nigerians have had to experience some of the most sordid tragedies arising from difference of opinions and distrust. It is interesting to mention that the conflict in Nigeria has not received the needed attention as it were. The leadership of Goodluck Jonathan did not receive the same effort and cooperation as compared to Muhammadu Buhari who came into office in May 2015. This paper argues the important roles played by the two Nigerian leaders which either aided or prevented collaboration. Goodluck Jonathan was perceived as a weak and indecisive leader whose leadership failed to effectively handle the Boko Haram insurgency. Muhammadu Buhari assumed office with a lot of high hopes and expectations from the Nigerian population and the international community to tackle the Boko Haram insurgency.

volatile Flavor Components in Various Varieties of Apple (Molus pumila M.) (사과의 품종별 휘발성 향기성분)

  • 이해정;박은령;김경수
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.4
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    • pp.597-605
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    • 2000
  • This study was investigated to compare the volatile flavor components in fuji, tsugaru, hongro and jonathan (Malus pumila M.). In the results of analyzing the volatie components of four varieties apples with GC-FID and GC/MS, 100, 68, 85 and 94 volatiles were identified in fuji, tsugaru, hongro and jonathan apples, respectively. Hexanal, butanol, (E)-2-hexenal, hexanol,3-methy-1-butanol, ethy1actate, ethyl butyrate, 2-methybutyl acetate and hexy1 acetate were major flavor components in the four varieties of apple, though there were several differences in composition of colatiles.

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Jonathan Swift's A Tale of a Tub: Carnivalization and Boundaries of Genre

  • Chung, Ewha
    • Journal of English Language & Literature
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    • v.55 no.6
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    • pp.1087-1101
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    • 2009
  • The ongoing attempt to classify and categorize Jonathan Swift's literary work, A Tale of a Tub, as either satire or parody has not only opened issues concerning authorial intent and a present voice but also surfaced questions as to whether Swift identifies with what he is criticizing, thereby becoming the subject he schemes to destroy in his own literary work. In addressing these critical problems, my paper questions the boundaries of genre and analyzes the Tale, not within the conventional terms of literary genre, but by applying Bakhtin's theory of the carnivalistic impulse to Swift's Tale. Rather than focus on finding the author or identifying a voice within the text, Bakhtin's literary vision of carnivalization allows a means of subverting all rules yet holding the work together to present a shocking experience for the reader. Within the Tale, carnivalistic participation includes the reader who at one point is given the detached position of subjective spectator yet eventually decrowns the reader as both a carnivalistic participant and object of the same ridicule and derision once used to judge others. In conclusion, the Tale is revealed as a mocking commentary on the efforts of human beings/participants/writers to ignore the carnival aspects of existence and attempt to elevate themselves to the privileged role of spectator/reader.