Investigating carotenoid loss after drying and storage of

More documents

Recommendations

Info

124 5. Mozambican field study However, when considering the three size reductions and taking into account dry matter content as a covariate, chip size had a significant effect on carotenoid losses (p
Tot. carotenoid content (!g/g) Tot. carotenoid content (!g/g) 450 400 350 300 250 200 150 100 50 0 450 400 350 300 250 200 150 100 50 0 125 Resisto Thin chips Thick chips 5. Mozambican field study Traditional slices 0 20 40 60 80 100 120 140 Storage time (days) MGCL Thin chips Thick chips Traditional slices 0 20 40 60 80 100 120 140 Storage time (days) Figure 5-3: Kinetics of total carotenoid degradation (!g.g -1 ) during storage of Resisto and MGCL01 sweet potato varieties chipped to three different sizes. Mean of 2 2 replicate; error bars refer to standard deviation. No effect of chipping was reported when analysing thin or thick chips or slices during storage (ANOVA two-ways; p
Page 1 and 2:
Investigating carotenoid loss after
Page 3 and 4:
DECLARATION I certify that this wor
Page 5 and 6:
ACKNOWLEDGEMENTS I am deeply gratef
Page 7 and 8:
CONTENTS CHAPTER 1.! LITERATURE REV
Page 9 and 10:
4.3.2! Effect of trial and sweet po
Page 11 and 12:
1.1 BACKGROUND 1.1.1 Introduction C
Page 13 and 14:
3 1. Literature review It is estima
Page 15 and 16:
5 1. Literature review food corresp
Page 17 and 18:
- the leaves that make energy and s
Page 19 and 20:
9 1. Literature review Uganda and M
Page 21 and 22:
11 1. Literature review communicati
Page 23 and 24:
13 1. Literature review soya grains
Page 25 and 26:
15 1. Literature review Drying is a
Page 27 and 28:
17 1. Literature review Modelling o
Page 29 and 30:
19 1. Literature review Other types
Page 31 and 32:
21 1. Literature review The perform
Page 33 and 34:
23 1. Literature review degradation
Page 35 and 36:
25 1. Literature review carotene an
Page 37 and 38:
27 1. Literature review (Rees, NRI,
Page 39 and 40:
29 1. Literature review red (>800 n
Page 41 and 42:
31 1. Literature review Figure 1-17
Page 43 and 44:
33 1. Literature review induced by
Page 45 and 46:
35 1. Literature review Enzymatic c
Page 47 and 48:
37 1. Literature review Volatile pr
Page 49 and 50:
39 1. Literature review Carotenoid
Page 51 and 52:
Table 1-5: Effect of type of proces
Page 53 and 54:
Comparison of losses in drying proc
Page 55 and 56:
45 1. Literature review observed we
Page 57 and 58:
47 1. Literature review Different p
Page 59 and 60:
Oxygen 49 1. Literature review Oxyg
Page 61 and 62:
51 1. Literature review the storage
Page 63 and 64:
2.2.2 Root samples 53 2. Assessment
Page 65 and 66:
2.2.5 Water activity 55 2. Assessme
Page 67 and 68:
57 2. Assessment of Methods below t
Page 69 and 70:
59 2. Assessment of Methods !-carot
Page 71 and 72:
61 2. Assessment of Methods indicat
Page 73 and 74:
63 2. Assessment of Methods were we
Page 75 and 76:
65 2. Assessment of Methods Table 2
Page 77 and 78:
67 2. Assessment of Methods Intra-l
Page 79 and 80:
69 2. Assessment of Methods Signifi
Page 81 and 82:
71 2. Assessment of Methods Table 2
Page 83 and 84: Content (µg/g) Content (µg/g) Con
Page 85 and 86: 75 2. Assessment of Methods way-ANO
Page 87 and 88: 77 2. Assessment of Methods puree.
Page 89 and 90: Percentage loss "a" redness 45% 40%
Page 91 and 92: CHAPTER 3. 81 3. Preliminary study
Page 93 and 94: 83 3. Preliminary study Figure 3-1:
Page 95 and 96: 85 3. Preliminary study Air velocit
Page 97 and 98: 3.2.10 Statistical analyses 87 3. P
Page 99 and 100: 89 3. Preliminary study because it
Page 101 and 102: Sample area (cm2) 91 3. Preliminary
Page 103 and 104: Figure 3-9: UV-Visible spectrum of
Page 105 and 106: 95 3. Preliminary study Mulokozi an
Page 107 and 108: 97 3. Preliminary study One hundred
Page 109 and 110: 99 4. Ugandan field study respectiv
Page 111 and 112: Transmittance (%) 101 4. Ugandan fi
Page 113 and 114: 4.2.5 Total carotenoids extraction
Page 115 and 116: 105 4. Ugandan field study The dryi
Page 117 and 118: 107 4. Ugandan field study individu
Page 119 and 120: 109 4. Ugandan field study values a
Page 121 and 122: 111 4. Ugandan field study caroteno
Page 123 and 124: 113 4. Ugandan field study observed
Page 125 and 126: 115 4. Ugandan field study OFSP chi
Page 127 and 128: 117 5. Mozambican field study carot
Page 129 and 130: 119 5. Mozambican field study kg (p
Page 131 and 132: 121 5. Mozambican field study Table
Page 133: 123 5. Mozambican field study carot
Page 137 and 138: 127 5. Mozambican field study 5.3.6
Page 139 and 140: a b c c 129 5. Mozambican field stu
Page 141 and 142: 131 5. Mozambican field study Table
Page 143 and 144: 133 5. Mozambican field study #-car
Page 145 and 146: 135 5. Mozambican field study carot
Page 147 and 148: CHAPTER 6. 137 6. Effect of pre-tre
Page 149 and 150: 139 6. Effect of pre-treatment out
Page 151 and 152: 141 6. Effect of pre-treatment afte
Page 153 and 154: 143 6. Effect of pre-treatment leve
Page 155 and 156: 145 6. Effect of pre-treatment Citr
Page 157 and 158: 147 6. Effect of pre-treatment trea
Page 159 and 160: 149 6. Effect of pre-treatment inte
Page 161 and 162: CHAPTER 7. 151 7. Involvement of en
Page 163 and 164: 7.2.2. pH measurement 153 7. Involv
Page 165 and 166: 155 7. Involvement of enzymes glyce
Page 167 and 168: 157 7. Involvement of enzymes Table
Page 169 and 170: 159 7. Involvement of enzymes carot
Page 171 and 172: 161 7. Involvement of enzymes carot
Page 173 and 174: 163 7. Involvement of enzymes Perox
Page 175 and 176: CHAPTER 8. 165 8. Study under contr
Page 177 and 178: Kilner jar (with metal lever catch
Page 179 and 180: Figure 8-2: Storage system for wate
Page 181 and 182: 8.2.4 Carotenoid analyses 171 8. St
Page 183 and 184: 8.3 RESULTS & DISCUSSION 8.3.1 Samp
Page 185 and 186:
175 8. Study under controlled condi
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
k (day-1) k (day-1) 0.10 0.08 0.06
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
CHAPTER 9. GENERAL DISCUSSION AND F
Page 207 and 208:
197 9. Discussion carotene loss aft
Page 209 and 210:
199 9. Discussion total carotenoids
Page 211 and 212:
9.4.2 Varietal influence 201 9. Dis
Page 213 and 214:
203 9. Discussion 2008). The side e
Page 215 and 216:
205 9. Discussion Absence of cis-is
Page 217 and 218:
207 9. Discussion (Chapter 7). Howe
Page 219 and 220:
209 9. Discussion of these cultivar
Page 221 and 222:
References 211 References Aguayo, V
Page 223 and 224:
213 References Bechoff, A., Dhuique
Page 225 and 226:
215 References Chen, H.E., Peng, H.
Page 227 and 228:
DIAS (2006) Semi-Annual and Annual
Page 229 and 230:
219 References Tropical Agriculture
Page 231 and 232:
221 References has a positive effec
Page 233 and 234:
223 References Kamiya N. and Nagamu
Page 235 and 236:
Lee, S.B. and Kim, K.J. (1995) Effe
Page 237 and 238:
227 References Mills, R.C. and Hart
Page 239 and 240:
Nestel, P., Bouis, H.E., Meenakshi,
Page 241 and 242:
231 References Preston, C.M. and Ba
Page 243 and 244:
Simon, P.W. (1997) Plant pigments f
Page 245 and 246:
235 References Tran, T.H., Nguyen,
Page 247 and 248:
237 References Walter, W.M., Purcel
Page 249 and 250:
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! A
Page 251 and 252:
Arrhenius model: = ∞ − Ea RT ek
Page 253 and 254:
242 Appendix 1 B/Calculation of Arr
Page 255 and 256:
Temperature is integrated for each
Page 257 and 258:
2) Integration of temperature in Ug
Page 259 and 260:
Appendix 2b: Dryers cost in Lualua,
Page 261 and 262:
250 Appendix 2 Technical informatio
Page 263 and 264:
252 Appendix 2 Technical informatio
Page 265 and 266:
Open air flat and sloped dryers 254
Page 267 and 268:
Appendix 3: Total carotenoids metho
Page 269 and 270:
4. Partition - Pour 40 ml of Petrol
Page 271 and 272:
Publications: Publications, award a
show all

Investigating carotenoid loss after drying and storage of

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?