( ( If ( it ( ( does n't ) ( ( have ( enough oxygen ) ) ( at ( ( the start ) ( of ( the ( fermentation process ) ) ) ) ) ) ) ) ) ( , ( it ( ( will ( take ( longer ( to ferment ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP it)) (VP (VBZ does) (RB n't) (VP (VB have) (NP (JJ enough) (NN oxygen)) (PP (IN at) (NP (NP (DT the) (NN start)) (PP (IN of) (NP (DT the) (NN fermentation) (NN process))))))))) (, ,) (NP (PRP it)) (VP (MD will) (VP (VB take) (ADVP (RB longer) (PP (TO to) (NP (NN ferment)))))) (. .)))
If it doesn't have enough oxygen at the start of the fermentation process, it will take longer to ferment.
(ROOT (S (NP (NNP Fermentation)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (PP (IN of) (S (VP (VBG making) (NP (NN atp)) (PP (IN without) (NP (NN oxygen)))))))) (. .)))