MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03180cam a2200325 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
EG-GiCUC |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
200917s2020 ua do f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
EG-GiCUC |
| Language of cataloging |
eng |
| Transcribing agency |
EG-GiCUC |
| 041 0# - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 049 ## - LOCAL HOLDINGS (OCLC) |
|---|
| Holding library |
Deposite |
| 097 ## - Thesis Degree |
|---|
| Thesis Level |
Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) |
|---|
| Classification number |
Cai01.07.09.Ph.D.2020.Ne.P |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Nehal Rafik Abdelmohsen |
| 245 12 - TITLE STATEMENT |
|---|
| Title |
A potential use of bioactive compounds from some fruits and its by- Products / |
| Statement of responsibility, etc. |
Nehal Rafik Abdelmohsen ; Supervised Shafika Abdelhamid Zaki , Shahinaz Ahmed Helmy , Somia Hassan Abdelatif |
| 246 15 - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
امكانية استخدام المركبات النشطة بيولوجيا من بعض الفواكه ومخلفاتها |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Cairo : |
| Name of publisher, distributor, etc. |
Nehal Rafik Abdelmohsen , |
| Date of publication, distribution, etc. |
2020 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
172 P . : |
| Other physical details |
charts , photographs ; |
| Dimensions |
25Ccm |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Food Science and Technology |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
The present study aimed to compare between physico-chemical properties of two papaya and avocado varieties (Summer and Winter). Also,extraction with two solvents (80% methanol and 0.5N acidified methanol) was applied in order to determine the bioactive compounds (total polyphenols and flavonoids) as well as the antioxidant activity by DPPH assay. Polyphenols and flavonoids were fractionated and identified by using HPLC in their by-products. Fatty acid methyl esters of papaya seeds oil and avocado pulps oil were fractionated and identified using GC as well as vitamins contents in papaya pulps, papaya seeds and avocado pulps. Results ascertained that both varieties are different in all measured parameters. Solvent type strongly affected both active constituents and its antioxidant activities.The highest phenolic recovery, by methanol 80% revealed greater efficiency as antioxidant potency for papaya seeds of Winter variety and avocado seeds of Summer variety, compared to ascorbic acid (200 ppm). However, peels of the Winter variety in papaya and avocado contained higher carotenoids content. The major polyphenols in papaya peels and seeds were pyrogallol and catechin. The major polyphenols in avocado peels included catechin and 3- hydroxy tyrosol, while avocado seeds had catechin and pyrogallol. The major flavonoids; hesperdin,and naringin in papaya and avocado peels were significantly higher than those in seeds. Obvious relations were found among the extractable total phenolic components and DPPH scavenging potentials of extracts. In papaya seeds oil and avocado pulps oil; oleic acid was the major fatty acid, followed by palmitic acid and Linoleic acid. Data also revealed that ascorbic acid and vitamin B12 were the major water soluble vitamins in both papaya and avocado pulps. On the contrary, vitamin K was the major vitamin in papaya seeds and avocado pulps |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE |
|---|
| Additional physical form available note |
Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Antioxidant activity |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Avocado |
| 653 #4 - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Papaya |
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Shafika Abdelhamid Zaki , |
| Relator term |
|
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Shahinaz Ahmed Helmy , |
| Relator term |
|
| 700 0# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Somia Hassan Abdelatif , |
| Relator term |
|
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Amira |
| Reviser |
Cataloger |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| Cataloger |
Nazla |
| Reviser |
Revisor |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Thesis |
