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Song, Nak-Bum,Lee, Ji-Hyun,Song, Kyung Bin 한국응용생명화학회 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.1
Perilla seed meal protein (PSMP) was extracted from perilla seed oil residue, and its composite films were developed using different amounts of red algae (RA) to prepare edible films. The PSMP composite film that contained 3 % RA had the highest tensile strength (11.52 MPa) and the lowest water vapor permeability ($1.82{\times}10^{-9}g\;m/m^2$ s Pa). The incorporation of clove oil into the PSMP composite film had the highest antimicrobial activity against Listeria monocytogenes. Pork sausages packaged with the composite films containing clove oil showed antimicrobial and antioxidative activities during storage at $4^{\circ}C$. The composite film containing 1.2 % clove oil reduced the microbial growth by 1.24 log CFU/g compared to the control, and thiobarbituric acid reactive substances and peroxide values were reduced by 40 and 37 %, respectively. These results suggest that the PSMP/RA composite film containing 1.2 % clove oil can be utilized in sausage packaging.
송혜연(Hye-Yeon Song),조완신(Wan-Shin Jo),송낙범(Nak-Bum Song),송경빈(Kyung Bin Song) 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.9
포도씨박으로부터 추출된 단백질에 다양한 가소제를 첨가하여 포도씨박 단백질(DGP) 필름을 제조하였고, 또한 DGP 필름의 물성을 개선시키기 위해 nanoclay나 젤라틴을 첨가하여 복합필름을 제조하였다. 사용된 가소제 fructose(FRU), sucrose(SUC), polypropylene glycol(PPG) 가운데 SUC와 PPG를 2.5, 0.5% 비율로 첨가한 DGP 필름이 가장 필름 물성이 좋았다. DGP 복합필름의 경우, nanoclay(Cloisite Na?)를 첨가함으로써 필름의 물성이 향상되었는데 5% Cloisite Na?를 첨가한 인장강도와 신장률이 각각 1.45 MPa, 71.91%였다. 또한 DGP와 젤라틴의 복합필름에서는 젤라틴의 첨가량이 증가할수록 인장강도와 투습도는 증가하였고, 신장률은 감소하였다. 특히 DGP와 gelatin 비율이 각각 2%일 때 인장강도와 신장률이 20.95 MPa와 12.25%로 물성이 가장 좋았다. 본 연구결과, 미활용 되고 있는 포도씨박을 이용하여 제조한 가식성 필름은 식품포장재로써의 사용이 가능하다고 판단된다. Defatted grape seed meal protein (DGP) was extracted, and DGP films containing various plasticizers were prepared. To improve the mechanical properties of DGP film, nanoclay or gelatin was incorporated in the filmforming solution to manufacture DGP composite films. Among the plasticizers of fructose (FRU), sucrose (SUC), and polypropylene glycol (PPG), DGP film containing a SUC : PPG ratio of 2.5:0.5 exhibited the best film-forming ability. Addition of Cloisite Na? improved the mechanical properties of DGP film. Tensile strength (TS) and elongation at break (E) of the film containing 5% CloisiteNa? were 1.45 MPa and 71.97%, respectively. Regarding the DGP/gelatin composite films, TS and water vapor permeability (WVP) increased with increasing gelatin amount, whereas E decreased. In particular, the DGP/gelatin (2:2) composite film exhibited 20.95 MPa TS and 12.25% E. These results suggest that the DGP film prepared from defatted grape seed meal can be used as a food packaging material.
Song, Dahae,Bae, Jinhee,Ji, Hoon,Kim, Min-Bum,Bae, Youn-Sang,Park, Kyo Sung,Moon, Dohyun,Jeong, Nak Cheon American Chemical Society 2019 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.141 No.19
<P>Enhancement of hydrolytic stability of metal-organic frameworks (MOFs) is a challenging issue in MOF chemistry because most MOFs have shown limitations in their applications under a humid environment. Meanwhile, inner sphere electron transfer has constituted one of the most intensively studied subjects in contemporary chemistry. In this report, we show, for the first time, a new conceptual <I>coordinative reduction</I> of Cu<SUP>2+</SUP> ion, which is realized in a paddlewheel MOF, HKUST-1, with a postsynthetic manner via inner sphere “single” electron transfer from hydroquinone (H<SUB>2</SUB>Q) to Cu<SUP>2+</SUP> through its coordination bond. H<SUB>2</SUB>Q treatment of HKUST-1 under anhydrous conditions leads to the single charge (1+) reduction of approximately 30% of Cu<SUP>2+</SUP> ions. Thus, this coordinative reduction is an excellent reduction process to be self-controlled in both oxidation state and quantity. As described below, once Cu<SUP>2+</SUP> ions are reduced to Cu<SUP>+</SUP>, the reduction reaction does not proceed further, in terms of their oxidation state as well as their amount. Also, we demonstrate that a half of the Cu<SUP>+</SUP> ions (about 15%) remains in paddlewheel framework with pseudo square planar geometry and the other half of the Cu<SUP>+</SUP> ions (about 15%) forms [Cu(MeCN)<SUB>4</SUB>]<SUP>+</SUP> complex in a small cage in the fashion of a ship-in-a-bottle after dissociation from the framework. Furthermore, we show that the coordinative reduction results in substantial enhancement of the hydrolytic stability of HKUST-1 to the extent that its structure remains intact even after exposure to humid air for two years.</P> [FIG OMISSION]</BR>