Effects of antioxidants and modified atmospheres on the storage stability of the pecan kernel /

Bibliographic Details
Main Author: King, C. Clay, 1944-
Other Authors: Dill, C. W. (degree committee member.), Milford, M. H. (degree committee member.), Storey, J. B. (degree committee member.), Wagner, A. B. (degree committee member.)
Format: Thesis Book
Language:English
Published: 1986.
Subjects:
Online Access:Link to ProQuest copy
Link to OAKTrust copy

MARC

Tag First Indicator Second Indicator Subfields
LEADER 00000ctm a2200000Ia 4500
001 in00000433103
005 20220103135026.0
008 870128s1986 xx a bm 000 0 eng d
035 |9 ABW1702AM 
035 |a (OCoLC)15122386 
035 |a (OCoLC)ocm15122386 
040 |a TXA  |b eng  |c TXA  |d OCLCQ  |d OCLCG  |d OCLCQ  |d OCLCF  |d OCLCO  |d OCLCQ  |d TXA 
049 |a TXAM 
050 4 |a LD3635.5  |b .K93 1986 
099 |a 1986  |a Dissertation  |a K52 
100 1 |a King, C. Clay,  |d 1944- 
245 1 0 |a Effects of antioxidants and modified atmospheres on the storage stability of the pecan kernel / 
264 1 |c 1986. 
300 |a x, 148 leaves :  |b illustrations ;  |c 29 cm 
336 |a text  |b txt  |2 rdacontent 
337 |a unmediated  |b n  |2 rdamedia 
338 |a volume  |b nc  |2 rdacarrier 
500 |a "Major subject: Food Science and Technology." 
500 |a Typescript (photocopy). 
500 |a Vita. 
502 |b Ph. D.  |c Texas A & M University  |d 1986 
504 |a Includes bibliographical references (leaves 78-80). 
520 3 |6 520-00  |a The effects of antioxidants and modified atmospheres on the storage stability of the pecan kernel were studied. Samples which had been stored for one year at 35° to 40°F, were shelled. The sample halves were chopped into thirds, treated, and stored in sealed #303 cans at 85±2°F for 15 weeks. Antioxidant treatments were 0.02% and 0.05% by weight of α, γ, and mixed tocopherols, 0 .02% by weight of TBHQ, and BHA and BHT. A nitrogen flush and a vacuum were used to modify the headspace atmosphere. Quality was measured in terms of Hunter Lab color analyses, GC volatile analyses, and sensory evaluations. Treatments of a vacuum and a nitrogen flush were effective in preserving the quality of the pecan kernel as measured by Colors L and b, and a sensory panel color and flavor. The α, γ, and mixed tocopherols, at levels of 0.02% and 0.05%, had significant effects in preserving the color of the kernel testa as measured subjectively and by Color b. All, except the α-tocopherol at the 0.02% level, significantly reduced the flavor loss during storage. Also, the γ and mixed tocopherols significantly reduced the amount of headspace pentane produced. TBHQ and BHA and BHT were ineffective in preserving the quality of the pecan kernel during storage. On the basis of this study, the optimum storage treatment would be either the use of a vacuum or a nitrogen flush. The α, γ, and mixed tocopherols also would have a significant effect on preserving the color of the pecan kernel, but overall, these treatments are not as effective as the vacuum or nitrogen flush treatments. 
650 0 |a Pecan  |x Storage. 
650 4 |a Major food science and technology. 
655 7 |a Academic theses  |2 lcgft 
700 1 |a Burns, E. E.,  |e degree supervisor. 
700 1 |a Dill, C. W.,  |e degree committee member. 
700 1 |a Milford, M. H.,  |e degree committee member. 
700 1 |a Storey, J. B.,  |e degree committee member. 
700 1 |a Wagner, A. B.,  |e degree committee member. 
710 2 |a Texas A & M University,  |e degree granting institution. 
856 4 1 |u http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=753963351&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD  |z Link to ProQuest copy  |t 0 
856 4 1 |u https://hdl.handle.net/1969.1/DISSERTATIONS-440148  |z Link to OAKTrust copy  |t 0 
994 |a C0  |b TXA 
999 f f |s f93ce016-e7f6-3174-9958-810f2d13d6de  |i 8417a20f-c7c0-331f-8477-f2d905f8291b  |t 0 
952 f f |p noncirc  |a Texas A&M University  |b J.J. Pickle Campus  |c High Density Repository  |s HDR  |d Remote Storage  |t 0  |e 1986 Dissertation K52  |h Other scheme  |i unmediated -- volume  |m A14839614930 
952 f f |a Texas A&M University  |b College Station  |c Electronic Resources  |s www_evans  |d Available Online  |t 0  |e 1986 Dissertation K52  |h Other scheme 
998 f f |a 1986 Dissertation K52  |t 0  |l Available Online 
998 f f |a 1986 Dissertation K52  |t 0  |l Remote Storage