AI SearchAntioxidant activity and protective effect on DNA cleavage of some natural products (Record no. 6284)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03929nas|a2200397 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162802.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 040715s2003 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11933835 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.PH-03-8 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Bhuiyan, Mohammad Iqbal Hossain |
| 245 10 - TITLE STATEMENT | |
| Title | Antioxidant activity and protective effect on DNA cleavage of some natural products |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2003 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 45 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. PH-03-8 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 2003 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Comparison of antioxidant activity (AOA) of y-oryzonol present in dehusked rice and raw and stabilized rice bran by DPPH radical scavenging and hydroxyl radical scavenging method were done. The AOA of dehusked rice bran oil (DHRBO), raw rice bran oil (RRBO-extracted with hexane) and RRBO* (extracted with hexane : isopropanol (50:50)) and stabilized rice bran oil (SRBO) as measured by 1,1-Diphenyl-2-picryhydrazyl (DPPH) radical scavenging method were in the range of 37-46% at the concentration of 50 mg/ml. The AOA of different crude rice bran samples estimated by deoxyribose oxidation method also did not differ much (24-35%). These results indicated that processing of rice bran in different ways have little effect on AOA of y-oryzonol presents in rice bran oil. The leaves of Thai basil (Ocimum sanctum L) were freeze-dried and extracted with water, methanol, ethyl acetate and hexane. The anioxidant properties of leaf extracts and protective effect on DNA cleavage were tested. The antioxidant properties of basil leaf extracts were compared to the activityof ascorbic acid (AsA) and butylated hydroxyanisole (BHA). DPPH radical scavenging activities of the ethyl acetate fraction (EAFB) and hexane fraction of basil leaf (HFB) exhibited more DPPH radical scavenging activity than that of BHA and AsA at all concentration (0.02-10 mg/ml) tested. The water fraction (WFB) showed much higher DPPH radical scavenging activity than that of other antioxidants at low concentrations (0.02 - 1 mg/ml), while methanol fraction of basil showed little activity. The ethyl acetate and hexane fractions showed around 50 % inhibition of 2-deoxyribose oxidation by scavenging {u2022}OH at 10 mg/ml concentration, which was nearly same as compared to BHA (52.2 %) and AsA (53.46%). The water fraction showed 38.72 % antioxidant activity (AOA) at that concentration. Among the four fractions, water fraction of basil extract showed excellent protective effect on DNA cleavage followed by methanol fraction. The ethyl acetate fraction and hexane fraction had no protective effect. Water fraction of basil at 1.25 mg/ml concentration was found to be the minimum concentration that could prevent DNA strand scission. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Antioxidants |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | DNA |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rakshit, Sudip Kumar, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Jindal, Vinod Kumar, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Athapol Noomhorm, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | The Royal Government of Netherlands, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. PH-03-8 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href=" http://203.159.5.9/ait-thesis/detail.php?q=B08775"> http://203.159.5.9/ait-thesis/detail.php?q=B08775</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11933835 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240418 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 040715 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120651061 |
| CREATED | CREATED : 2004-07-15 |
| RECORD Id | RECORD # : i12407057 |
| LPATRON | LPATRON : 1026142 |
| LCHKIN | LCHKIN : 2016-10-19 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 15 |
| -- | TOT RENEW : 26 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160005566 |
| CREATED | CREATED : 2016-03-24 |
| RECORD Id | RECORD # : i1290773x |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.PH-03-8 | 30050120651061 | 17/08/2026 | 3 | 17/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.PH-03-8 | 30050160005566 | 17/08/2026 | 17/08/2026 | 40-Archives |