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Vsebnost primarnih in sekundarnih metabolitov v muškatnih, maslenih in hokaido bučah
Mohar, Luka (Author), Slatnar, Ana (Mentor) More about this mentor... This link opens in a new window

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Abstract
Buča je zelenjadnica iz skupine plodovk, ki se botanično uvršča v družino bučnic. Plod botanično imenujemo jagoda in je lahko precej različnih oblik, od podolgovate, okrogle, zvezdaste pa tudi kvadratne. Rastlina zahteva zmerno podnebje, brez večjih temperaturnih nihanj. Z načinom gojenja lahko vplivamo na vsebnosti primarnih in sekundarnih metabolitov v bučah. V današnjem času buča pridobiva na popularnosti. Med bolj znanimi novejšimi vrstami so tudi maslene, muškatne in hokaido buče. Uporabne so tako v kulinariki kot tudi v medicini. Večji del buče predstavlja voda, preostanek pa suha snov. V suhi snovi najdemo različne primarne in sekundarne metabolite. Primarni metaboliti so neposredno vključeni v procese v rastlini, predstavljajo vir energije za rastlino. Sekundarni metaboliti nimajo neposredne vloge v rastlinskih procesih. Imajo pomembno ekološko funkcijo, služijo kot zaščita pred rastlinojedci in pred rastlinskimi škodljivci, privabljajo opraševalce ipd. Za človeka so zelo pomembni v prehrani. Med primarnimi metaboliti najdemo v plodu buče predvsem škrob, sladkorje in maščobe v semenih, od sekundarnih metabolitov pa karotenoide, fenolne in aromatične snovi. V vseh treh opisanih tipih buč najdemo različne oblike karotenoidov (zeaksantin, lutein, alfa in beta karoten), ki se med skladiščenjem razgrajujejo in pretvarjajo v nove oblike ter dajejo značilno obarvanost. Največ beta karotena nastane prav v času skladiščenja. Med skladiščenjem prihaja tudi do pretvorbe škroba v bolj enostavne mono in disaharide.

Language:Slovenian
Keywords:Maslene buče, muškatne buče, hokaido buče, primarni metaboliti, sekundarni metaboliti, fenoli, kemična sestava
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2017
Publisher:[L. Mohar]
UDC:635.62:543.6(043.2)
COBISS.SI-ID:8784761 Link is opened in a new window
Views:396
Downloads:118
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Secondary language

Language:English
Title:Content of primary and secondary metabolites in moschata, butternut and hokkaido squash
Abstract:
A cucurbit is a vegetable from the group of fruiting vegetable which is botanically classified among cucurbitaceous plants (Cucurbitaceae). The fruit is botanically called a berry and can be of different shapes from oblong, round, star-like and also square. The plant demands temperate climate, without bigger oscillations of temperatures. By the way of cultivation we can influence the content of primary and secondary metabolites in cucurbits. Nowadays the cucurbit is gaining the popularity. Among more known newer species are also butternut, moschata and hokaido cucurbits. They can be used as well in culinary as in medicine. The greatest part of the cucurbit is water and the rest is the dry substance. In the dry substance we find different primary and secondary metabolites. The primary metabolites are directly included in the processes in the plant, they represent the source of the energy for the plant. The secondary metabolites have no direct role in vegetal processes. They have an important ecological function, they serve as the protection from the herbivores and vegetal pests, they lure the pollinators, etc. They are very important in human nutrition. Among primary metabolites in the fruit of a cucurbit we find mostly starch, sugar, and grease in the seeds, from the secondary metabolites there are carotenoids, phenolics and aromatic substances. In all three described types of cucurbits we find different forms of carotenoids (zeaxanthin, lutein, alfa and beta carotene) which decompose during the storage and transform into new forms and give distinctive colours. The greatest amount of beta carotene rises just in time of storage. During the storage there is also the transformation of starch into more simple mono and disaccharides.

Keywords:Cucurbits, moschata, butternut squash, primary metabolites, secondary metabolites, phenolics, chemical composition

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