Dose rates of electron beam and gamma ray irradiation affect microbial decontamination and quality changes in dried red pepper (Capsicum annuumL.) powder

2018 ◽  
Vol 99 (2) ◽  
pp. 632-638 ◽  
Author(s):  
Hyun-Kyu Kyung ◽  
Sudha Rani Ramakrishnan ◽  
Joong-Ho Kwon
Keyword(s):  
Electron Beam ◽  
Gamma Ray ◽  
Red Pepper ◽  
Quality Changes ◽  
Dose Rates ◽  
Gamma Ray Irradiation

scholarly journals Induksi Mutasi Fisik dengan Iradiasi Sinar Gamma pada Kunyit (Curcuma domestica Val.)

2015 ◽  
Vol 5 (2) ◽  
pp. 84
Author(s):  
Yahidah Rosyidah Anshori ◽  
Syarifah Iis Aisyah ◽  
Latifah K Darusman
Keyword(s):  
Gamma Ray ◽  
Morphological Changes ◽  
Stunted Growth ◽  
Dose Rates ◽  
Yellow Color ◽  
Vegetative Traits ◽  
Gamma Ray Irradiation ◽  
Leaf Deformation ◽  
Rheumatic Heart

<p>ABSTRACT</p><p>Turmeric  is  a  spice plant  and  potential  as a major  ingredient  of  functional food. Turmeric contains curcumin, an active compound which gives the yellow color from its rhizomes that provides health benefits. Curcumin is an antioxidant and acts as an anti-cholesterol as well as a medicine for tumors, cancer, hypertension, hyperglycemia, and rheumatic heart disease. Limited supply of simplicialevel of curcumin based on market standards and the low genetic variability of turmeric as a source for conventional breeding makes this research valuable to be  conducted.  The purposes of this study were  to  obtain  LD50 dose  and  turmeric  crop  yield  variability  due  to  the  changes  in physical mutation  induced  by  gamma-ray  irradiation.  An  acute  single iradiation  was  given  to  using  the universal panoramic irradiator with 11 different dose rates,  The plants  then were cultivated in vivo. The  growth observation  on  turmeric  was  observed  on  vegetative  traits  qualitatively and quantitatively. In this study, the LD50 dose of turmeric was 47.26 Gy. The plant’s vegetative growth tends  to  decelerate  with  the  increase  of irradiation  doses.  The  high  variabillity  growth  for   leaf number  occured  on 50  Gy  of  dose.  Morphological  changes  occured  in  the  form  of  pseudo-stem shape  due  to  irradiation  doses  of  50  and  60  Gy.  Most  leaf  surface discoloration  and  leaf deformation occured at 50 and 70 Gy, and stunted growth occured at 60 and 70 Gy.</p><p>Keywords: curcumin, iradiation, LD50, turmeric</p><p> </p><p>ABSTRAK</p><p>Kunyit merupakan tanaman rempah yang potensial sebagai bahan utama pangan fungsional. Rimpang kunyit mengandung senyawa aktif utama yaitu kurkumin yang memberikan warna kuning pada  rimpang  juga  memberikan manfaat  untuk  kesehatan.  Kurkumin  bersifat  antioksidan  dan berperan sebagai  antikolesterol,  obat  tumor,  kanker,  obat  hipertensi,  hiperglikemia, penyakit  hati serta  rematik.  Keterbatasan  penyediaan  simplisia  yang mempunyai  kandungan  kurkumin  sesuai standar  pasar  serta  rendahnya keragaman  genetik  kunyit  sebagai  bahan  seleksi  pemuliaan konvensional menjadikan penelitian ini penting untuk dilakukan. Tujuan penelitian ini adalah untuk mendapatkan  dosis  LD50  serta  menghasilkan  perubahan  keragaan tanaman  kunyit  akibat  induksi mutasi  fisik  melalui  iradiasi  sinar  gamma. Iradiasi  dilakukan  secara  tunggal  (acute  irradiation) menggunakan Iradiator Panorama Serba Guna (IRPASENA) dengan 11 taraf dosis yang berbeda dan tanaman  yang  telah  diradiasi  dibudidayakan  secara  in  vivo. Pengamatan  pertumbuhan  tanaman kunyit  dilakukan  pada  karakter vegetatif secara  kuantitatif  dan  kualitatif.  Pada  penelitian  ini, didapatkan  LD50 kunyit  yaitu  pada  dosis  47.26  Gy.  Pertumbuhan  vegetatif  tanaman cenderung mengalami  perlambatan  dengan  semakin  meningkatnya  dosis iradiasi.  Keragaman  tertinggi pertumbuhan jumlah daun terdapat pada aplikasi dosis 50 Gy. Perubahan morfologi berupa bentuk pangkal  batang  semu  terjadi pada  tanaman  akibat  iradiasi  dosis  50  dan  60  Gy,  perubahan warna sebagian permukaan daun dan terjadi pada 50 dan 70 Gy, perubahan bentuk daun terjadi pada 50 dan 70 Gy, serta pertumbuhan tanaman yang kerdil terjadi pada tanaman 60 dan 70 Gy.</p><p>Kata kunci: iradiasi, kunyit, kurkumin, LD50</p>

Decomposition of Volatile Organic Compounds in Air by Electron Beam and Gamma Ray Irradiation

1998 ◽  
Vol 3 (1) ◽  
Author(s):  
Teruyuki Hakoda ◽  
Mingde Yang ◽  
Koichi Hirota ◽  
Shoji Hashimoto
Keyword(s):  
Electron Beam ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chlorine Atom ◽  
Gamma Ray ◽  
Batch Reactors ◽  
Aerosol Formation ◽  
Gaseous Compound ◽  
Volatile Organic ◽  
Gamma Ray Irradiation

AbstractRadiation decomposition and aerosol formation of various volatile organic compounds (VOCs) were examined to get information on a treatment of industrial off-gas. Model gases, air containing aromatic VOCs, chloroethenes and 1,2-dichloroethane, were sealed in batch reactors and irradiated with electron beam (EB) and gamma ray. For aromatic VOCs, G-values of decomposition in gamma ray irradiation were about 1.5 times larger than those in EB irradiation. The ratios of aerosol formation to decomposed aromatic VOCs were ranged from 30 to 66% on the basis of carbon. For chloroethenes except monochloroethylene, G-values of decomposition were 6 to 45 times larger than those of aromatic VOCs and the irradiated product was mainly gaseous compound. The G-values of decomposition in EB irradiation increased markedly with increase of chlorine atom in a molecule, while those in gamma ray irradiation were almost kept constant.

Radiation-Heat Synergism for Inactivation of Alicyclobacillus acidoterrestris Spores in Citrus Juice

2004 ◽  
Vol 67 (11) ◽  
pp. 2538-2543 ◽  
Author(s):  
M. NAKAUMA ◽  
K. SAITO ◽  
T. KATAYAMA ◽  
M. TADA ◽  
S. TODORIKI
Keyword(s):  
Electron Beam ◽  
Gamma Ray ◽  
Alicyclobacillus Acidoterrestris ◽  
Prolonged Heating ◽  
Citrus Juice ◽  
Complete Inactivation ◽  
Gamma Ray Irradiation ◽  
D Values ◽  
Sterilization Effect ◽  
D Value

The objective of this study was to investigate the influence of electron-beam and gamma-ray irradiation and temperature (85 to 95°C) on Alicyclobacillus acidoterrestris GD3B strain (NCIMB 13137) spores by calculating and comparing the decimal reduction dose or time (D-values). The survival rate of A. acidoterrestris spores decreased exponentially with irradiation doses of an electron beam or gamma ray. D-values determined for electron-beam and gamma-ray irradiated spores on filter paper ranged from 1.02 to 1.10 kGy. On the other hand, the thermal sterilization effect showed a single exponential decrease within 1.5-log decreases in cell numbers (D85°C = 70.5 min, D90°C = 16.1 min, and D95°C = 5.19 min and z-value [change in temperature required to change the D-value] was 8.83°C), and prolonged heating produced an increase of 10 to 13 times that of the thermal resistance. However, within all time ranges studied (5 to 360 min), a linear decrease in the D-value was observed with an increase in the temperature. A combination of two different methods, irradiation before heating, was appropriate for reducing the duration of the heat treatment required to achieve the inactivation of conidia. Moreover, a necessary radiation dosage for complete inactivation of A. acidoterrestris spores that contaminated dextrin was examined. Dextrin is often used in the juice industry as an augmentor, and it is known to be sometimes contaminated by these spores. The D-values of the spores in dextrin for electron-beam and gamma-ray irradiations were 1.72 and 1.79 kGy, respectively. The doses required for elimination of the spores could be lowered by using irradiation in combination with heat sterilization. When dextrin powder contaminated with 104 CFU/g of A. acidoterrestris was preirradiated at 1.0 kGy of electron beam, the citrus juice containing dextrin at a concentration of 10% (wt/vol) was completely sterilized by heating for 20 min at 95°C.

Effect of X-ray, gamma ray, and electron beam irradiation on the hygienic and physicochemical qualities of red pepper powder

LWT ◽  
2015 ◽  
Vol 63 (2) ◽  
pp. 846-851 ◽  
Author(s):  
Koo Jung ◽  
Beom-Seok Song ◽  
Min Jung Kim ◽  
Byeong-Geum Moon ◽  
Seon-Min Go ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Gamma Ray ◽  
Red Pepper ◽  
Beam Irradiation ◽  
X Ray ◽  
Pepper Powder ◽  
Red Pepper Powder

scholarly journals The effects of electron beam and gamma ray irradiation levels in spray-dried animal plasma on nursery pig performance

2006 ◽  
pp. 80-85
Author(s):  
C N Groesbeck ◽  
Joel M DeRouchey ◽  
Michael D Tokach ◽  
Robert D Goodband ◽  
Jim L Nelssen ◽  
...  
Keyword(s):  
Electron Beam ◽  
Gamma Ray ◽  
Nursery Pig ◽  
Gamma Ray Irradiation ◽  
Pig Performance ◽  
Spray Dried
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