"In different food products, a part of their starch is resistant
to the activity of amylolytic enzymes. It depends on the
botanical origin of raw material and changes proceeding
under conditions of the production process. The content of
resistant starch in food fluctuates from a fraction up to 20%
of product’s weight and is, to a high extent, determined by
food preparation manner [Brighenti et al., 1998]. During the
production of bakery products and confectionery, the content of resistant starch is observed to increase [Marlett &
Longacre, 1996]. A further increase in RS content in bakery
products proceeds during their storage, mainly as a result of
amylopectin retrogradation [Eerlingen et al., 1994b]. An
increased RS content in bakery products may be achieved
by a change in technological parameters of the baking
process, and by the addition of high-amylose starch or lactic
acid [Lijeberg et al., 1996]. The content of resistant starch in
different cereal-based products depends on the raw material
used and technological process applied [Ranhotra et al.,
1999]. The amount of resistant starch in rice, prepared for
consumption with different methods, is determined by the
amylose concentration in starch [Sagum & Acrot, 2000]. In
fried dry cereal products, resistant starch content depends
on the botanical origin of starch used for their production.
During frying, RS content increases, however the increase is
higher in the internal than in the external part of the fried
products. In those products, resistance of RS starch to enzymatic
activity is positively correlated with amylose concentration
in starch used for their preparation. An increase in
the RS content in fried cereal products is accompanied by
their increasing hardness [Pinthus et al., 1998].
During thermal treatment of potato tubers, starch gelatinizes
and is almost completely digested. Freshly-made
potato dishes contain 1–2% of resistant starch. However,
the content of enzyme-resistant starch is observed to
increase substantially upon multiple cooling and heating of
those products [Kingman & Englyst, 1994]. As a result of
cooked potato storage at a temperature approximating 0°C
more resistant starch is formed than at room temperature
[Gormley & Walshe, 1999]. Fried potato products, especially
French fries, contain more resistant starch than cooked
potatoes. They are also characterized by a higher glycaemic
index compared to cooked potatoes [Garcia-Alonso &
Go¼i, 2000]. The content of resistant starch in French fries
increases along with their increasing thickness. The starch is
packed non-uniformly, it occurs in smaller amounts in the
outer layers of the French fries. Treatment of potato starch
and potato amylose and amylopectin preparations according
to procedures applied at the production of French fries
indicates that amylose is responsible for the appearing
resistance of starch. In this case, the resistance of potato
amylopectin is negligible [Go¼i et al., 1997]. In a variety of
products, including freeze-stored ones, the contents of
resistant starch increase depending on the origin of raw
material they are made of [Rosin et al., 2000]. "
Auszug aus
Polish Journal of Food and Nutrition Sciences
Wen die Materie interessiert, hier ist sehr genau beschrieben, wie aus der Stärke retrogradierte Stärke wird.
Eine Erhöhung der Resistenten Stärke ist möglich, siehe Auszug oben, allerdings nicht mit Kokosöl.
Viel mehr liegt es an der Konformation der Stärke im Raum (A-,B-,C-Typ).
Wem das nicht reicht und auf die Strukturen der Stärke nicht klar kommt, dem leg ich mal Lehrbuch der Lebensmittelchemie von Hans-Dieter Belitz ans Herz
viel Spaß beim Lesen, ich denke das sollte die Frage von Beginn ziemlich komplett beantworten.
http://journal.pan.olsztyn.pl/pdfy/2004/1s/rozdzial3.pdf